/*
 * @name BeautyTips
 * @desc a tooltips/baloon-help plugin for jQuery
 *
 * @author Jeff Robbins - Lullabot - http://www.lullabot.com
 * @version 0.9.1  (2/15/2009)
 */
jQuery.fn.bt=function(content,options){
    if(typeof content!="string"){
        var contentSelect=true;
        options=content;
        content=false
    }else{
        var contentSelect=false
    }
    if(jQuery.fn.hoverIntent&&jQuery.bt.defaults.trigger=="hover"){
        jQuery.bt.defaults.trigger="hoverIntent"
    }
    return this.each(function(index){
        var opts=jQuery.extend(false,jQuery.bt.defaults,options);
        opts.spikeLength=numb(opts.spikeLength);
        opts.spikeGirth=numb(opts.spikeGirth);
        opts.overlap=numb(opts.overlap);
        var ajaxTimeout=false;
        if(opts.killTitle){
            $(this).find("[title]").andSelf().each(function(){
                if(!$(this).attr("bt-xTitle")){
                    $(this).attr("bt-xTitle",$(this).attr("title")).attr("title","")
                }
            })
        }
        if(typeof opts.trigger=="string"){
            opts.trigger=[opts.trigger]
        }
        if(opts.trigger[0]=="hoverIntent"){
            var hoverOpts=$.extend(opts.hoverIntentOpts,{over:function(){this.btOn()},out:function(){this.btOff()}});
            $(this).hoverIntent(hoverOpts)
        }else{
            if(opts.trigger[0]=="hover"){
                $(this).hover(function(){this.btOn()},function(){this.btOff()})
            }else{
                if(opts.trigger[0]=="now"){
                    if($(this).hasClass("bt-active")){this.btOff()}else{this.btOn()}
                }else{
                    if(opts.trigger[0]=="none"){}
                    else{
                        if(opts.trigger.length>1&&opts.trigger[0]!=opts.trigger[1]){
                            $(this).bind(opts.trigger[0],function(){this.btOn()})
                            .bind(opts.trigger[1],function(){this.btOff()})
                        }else{
                            $(this).bind(opts.trigger[0],function(){
                                if($(this).hasClass("bt-active")){
                                    this.btOff()
                                }else{this.btOn()}
                            })
                        }
                    }
                }
            }
        }
        this.btOn=function(){
            $(this).css({'background-position': '0 -18px'})
            if(typeof $(this).data("bt-box")=="object"){
                this.btOff()
            }
            opts.preShow.apply(this);
            $(jQuery.bt.vars.closeWhenOpenStack).btOff();
            $(this).addClass("bt-active "+opts.activeClass);
            if(contentSelect&&opts.ajaxPath==null){
                if(opts.killTitle){
                    $(this).attr("title",$(this).attr("bt-xTitle"))
                }
                content=eval(opts.contentSelector);
                if(opts.killTitle){
                    $(this).attr("title","")
                }
            }
            if(opts.ajaxPath!=null&&content==false){
                if(typeof opts.ajaxPath=="object"){
                    var url=eval(opts.ajaxPath[0]);
                    url+=opts.ajaxPath[1]?" "+opts.ajaxPath[1]:""
                }else{
                    var url=opts.ajaxPath
                }
                var off=url.indexOf(" ");
                if(off>=0){
                    var selector=url.slice(off,url.length);url=url.slice(0,off)
                }
                var cacheData=opts.ajaxCache?$(document.body).data("btCache-"+url.replace(/\./g,"")):null;
                if(typeof cacheData=="string"){
                    content=selector?jQuery("<div/>").append(cacheData.replace(/<script(.|\s)*?\/script>/g,"")).find(selector):cacheData
                }else{
                    var target=this;
                    var ajaxOpts=jQuery.extend(false,{type:opts.ajaxType,data:opts.ajaxData,cache:opts.ajaxCache,url:url,complete:function(XMLHttpRequest,textStatus){if(textStatus=="success"||textStatus=="notmodified"){if(opts.ajaxCache){$(document.body).data("btCache-"+url.replace(/\./g,""),XMLHttpRequest.responseText)}ajaxTimeout=false;content=selector?jQuery("<div/>").append(XMLHttpRequest.responseText.replace(/<script(.|\s)*?\/script>/g,"")).find(selector):XMLHttpRequest.responseText}else{if(textStatus=="timeout"){ajaxTimeout=true}content=opts.ajaxError.replace(/%error/g,XMLHttpRequest.statusText)}if($(target).hasClass("bt-active")){target.btOn()}}},opts.ajaxData);
                    $.ajax(ajaxOpts);
                    content=opts.ajaxLoading
                }
            }
            var offsetParent=$(this).offsetParent();
            var pos=$(this).btPosition();
            var top=numb(pos.top)+numb($(this).css("margin-top"));
            var left=numb(pos.left)+numb($(this).css("margin-left"));
            var width=$(this).outerWidth();
            var height=$(this).outerHeight();
            if(typeof content=="object"){
                content=$(content).clone(true);
                content.attr("id",content.attr("id")+(new Date).getTime());
                content.show();
                
            }
            var $text=$('<div class="bt-content" id="'+ opts.contentId +'"></div>').append(content).css({padding:opts.padding,position:"absolute",width:opts.width,height:opts.height,zIndex:opts.textzIndex,backgroundColor:opts.textBackground}).css(opts.cssStyles);
            var $box=$('<div class="bt-wrapper"></div>').append($text).addClass(opts.cssClass).css({position:"absolute",width:opts.width,height:opts.height,zIndex:opts.wrapperzIndex,opacity:opts.wrapperOpacity}).appendTo(offsetParent);
            $text.mouseenter(
                    function(){
                        over = true;
                    })
                .mouseleave(
                    function(){
                        over = false;
                        $(".tooltip").btOff()
                    });
            if($.fn.bgiframe){
                $text.bgiframe();
                $box.bgiframe()
            }
            $(this).data("bt-box",$box);
            var scrollTop=numb($(document).scrollTop());
            var scrollLeft=numb($(document).scrollLeft());
            var docWidth=numb($(window).width());
            var docHeight=numb($(window).height());
            var winRight=scrollLeft+docWidth;
            var winBottom=scrollTop+docHeight;
            var space=new Object();
            space.top=$(this).offset().top-scrollTop;
            space.bottom=docHeight-(($(this).offset().top+height)-scrollTop);
            space.left=$(this).offset().left-scrollLeft;space.right=docWidth-(($(this).offset().left+width)-scrollLeft);
            var textOutHeight=numb($text.outerHeight());
            var textOutWidth=numb($text.outerWidth());
            if(opts.positions.constructor==String){
                opts.positions=opts.positions.replace(/ /,"").split(",")
            }
            if(opts.positions[0]=="most"){
                var position="top";
                for(var pig in space){
                    position=space[pig]>space[position]?pig:position
                }
            }else{
                for(var x in opts.positions){
                    var position=opts.positions[x];
                    if((position=="left"||position=="right")&&space[position]>textOutWidth+opts.spikeLength){
                        break
                    }else{
                        if((position=="top"||position=="bottom")&&space[position]>textOutHeight+opts.spikeLength){
                            break
                        }
                    }
                }
            }
            var horiz=left+((width-textOutWidth)*0.5);
            var vert=top+((height-textOutHeight)*0.5);
            var animDist=opts.animate?numb(opts.distance):0;
            var points=new Array();
            var textTop,textLeft,textRight,textBottom,textTopSpace,textBottomSpace,textLeftSpace,textRightSpace,crossPoint,textCenter,spikePoint;
            switch(position){
                case"top":
                    $text.css("margin-bottom",opts.spikeLength+"px");
                    $box.css({top:(top-$text.outerHeight(true)-animDist)+opts.overlap,left:horiz});
                    textRightSpace=(winRight-opts.windowMargin)-($text.offset().left+$text.outerWidth(true));
                    var xShift=0;
                    if(textRightSpace<0){
                        $box.css("left",(numb($box.css("left"))+textRightSpace)+"px");
                        xShift-=textRightSpace
                    }
                    textLeftSpace=($text.offset().left+numb($text.css("margin-left")))-(scrollLeft+opts.windowMargin);
                    if(textLeftSpace<0){
                        $box.css("left",(numb($box.css("left"))-textLeftSpace)+"px");
                        xShift+=textLeftSpace
                    }
                    textTop=$text.btPosition().top+numb($text.css("margin-top"));
                    textLeft=$text.btPosition().left+numb($text.css("margin-left"));
                    textRight=textLeft+$text.outerWidth();
                    textBottom=textTop+$text.outerHeight();
                    textCenter={x:textLeft+($text.outerWidth()*opts.centerPointX),y:textTop+($text.outerHeight()*opts.centerPointY)};
                    points[points.length]=spikePoint={y:textBottom+opts.spikeLength,x:((textRight-textLeft)*0.5)+xShift,type:"spike"};
                    crossPoint=findIntersectX(spikePoint.x,spikePoint.y,textCenter.x,textCenter.y,textBottom);
                    crossPoint.x=crossPoint.x<textLeft+opts.spikeGirth/2+opts.cornerRadius?textLeft+opts.spikeGirth/2+opts.cornerRadius:crossPoint.x;
                    crossPoint.x=crossPoint.x>(textRight-opts.spikeGirth/2)-opts.cornerRadius?(textRight-opts.spikeGirth/2)-opts.CornerRadius:crossPoint.x;
                    points[points.length]={x:crossPoint.x-(opts.spikeGirth/2),y:textBottom,type:"join"};
                    points[points.length]={x:textLeft,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textBottom,type:"corner"};
                    points[points.length]={x:crossPoint.x+(opts.spikeGirth/2),y:textBottom,type:"join"};
                    points[points.length]=spikePoint;
                    break;
                case"left":
                    $text.css("margin-right",opts.spikeLength+"px");
                    $box.css({top:vert+"px",left:((left-$text.outerWidth(true)-animDist)+opts.overlap)+"px"});
                    textBottomSpace=(winBottom-opts.windowMargin)-($text.offset().top+$text.outerHeight(true));
                    var yShift=0;
                    if(textBottomSpace<0){
                        $box.css("top",(numb($box.css("top"))+textBottomSpace)+"px");
                        yShift-=textBottomSpace
                    }
                    textTopSpace=($text.offset().top+numb($text.css("margin-top")))-(scrollTop+opts.windowMargin);
                    if(textTopSpace<0){
                        $box.css("top",(numb($box.css("top"))-textTopSpace)+"px");
                        yShift+=textTopSpace
                    }
                    textTop=$text.btPosition().top+numb($text.css("margin-top"));
                    textLeft=$text.btPosition().left+numb($text.css("margin-left"));
                    textRight=textLeft+$text.outerWidth();
                    textBottom=textTop+$text.outerHeight();
                    textCenter={x:textLeft+($text.outerWidth()*opts.centerPointX),y:textTop+($text.outerHeight()*opts.centerPointY)};
                    points[points.length]=spikePoint={x:textRight+opts.spikeLength,y:((textBottom-textTop)*0.5)+yShift,type:"spike"};
                    crossPoint=findIntersectY(spikePoint.x,spikePoint.y,textCenter.x,textCenter.y,textRight);
                    crossPoint.y=crossPoint.y<textTop+opts.spikeGirth/2+opts.cornerRadius?textTop+opts.spikeGirth/2+opts.cornerRadius:crossPoint.y;crossPoint.y=crossPoint.y>(textBottom-opts.spikeGirth/2)-opts.cornerRadius?(textBottom-opts.spikeGirth/2)-opts.cornerRadius:crossPoint.y;
                    points[points.length]={x:textRight,y:crossPoint.y+opts.spikeGirth/2,type:"join"};
                    points[points.length]={x:textRight,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:crossPoint.y-opts.spikeGirth/2,type:"join"};
                    points[points.length]=spikePoint;
                    break;
                case"bottom":
                    $text.css("margin-top",opts.spikeLength+"px");
                    $box.css({top:(top+height+animDist)-opts.overlap,left:horiz});
                    textRightSpace=(winRight-opts.windowMargin)-($text.offset().left+$text.outerWidth(true));
                    var xShift=0;
                    if(textRightSpace<0){
                        $box.css("left",(numb($box.css("left"))+textRightSpace)+"px");
                        xShift-=textRightSpace
                    }
                    textLeftSpace=($text.offset().left+numb($text.css("margin-left")))-(scrollLeft+opts.windowMargin);
                    if(textLeftSpace<0){
                        $box.css("left",(numb($box.css("left"))-textLeftSpace)+"px");
                        xShift+=textLeftSpace
                    }
                    textTop=$text.btPosition().top+numb($text.css("margin-top"));
                    textLeft=$text.btPosition().left+numb($text.css("margin-left"));
                    textRight=textLeft+$text.outerWidth();
                    textBottom=textTop+$text.outerHeight();
                    textCenter={x:textLeft+($text.outerWidth()*opts.centerPointX),y:textTop+($text.outerHeight()*opts.centerPointY)};
                    points[points.length]=spikePoint={x:((textRight-textLeft)*0.5)+xShift,y:0,type:"spike"};
                    crossPoint=findIntersectX(spikePoint.x,spikePoint.y,textCenter.x,textCenter.y,textTop);
                    crossPoint.x=crossPoint.x<textLeft+opts.spikeGirth/2+opts.cornerRadius?textLeft+opts.spikeGirth/2+opts.cornerRadius:crossPoint.x;
                    crossPoint.x=crossPoint.x>(textRight-opts.spikeGirth/2)-opts.cornerRadius?(textRight-opts.spikeGirth/2)-opts.cornerRadius:crossPoint.x;
                    points[points.length]={x:crossPoint.x+opts.spikeGirth/2,y:textTop,type:"join"};
                    points[points.length]={x:textRight,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textTop,type:"corner"};
                    points[points.length]={x:crossPoint.x-(opts.spikeGirth/2),y:textTop,type:"join"};
                    points[points.length]=spikePoint;
                    break;
                case"right":
                    $text.css("margin-left",(opts.spikeLength+"px"));
                    $box.css({top:vert+"px",left:((left+width+animDist)-opts.overlap)+"px"});
                    textBottomSpace=(winBottom-opts.windowMargin)-($text.offset().top+$text.outerHeight(true));
                    var yShift=0;
                    if(textBottomSpace<0){
                        $box.css("top",(numb($box.css("top"))+textBottomSpace)+"px");
                        yShift-=textBottomSpace
                    }
                    textTopSpace=($text.offset().top+numb($text.css("margin-top")))-(scrollTop+opts.windowMargin);
                    if(textTopSpace<0){
                        $box.css("top",(numb($box.css("top"))-textTopSpace)+"px");
                        yShift+=textTopSpace
                    }
                    textTop=$text.btPosition().top+numb($text.css("margin-top"));
                    textLeft=$text.btPosition().left+numb($text.css("margin-left"));
                    textRight=textLeft+$text.outerWidth();
                    textBottom=textTop+$text.outerHeight();
                    textCenter={x:textLeft+($text.outerWidth()*opts.centerPointX),y:textTop+($text.outerHeight()*opts.centerPointY)};
                    points[points.length]=spikePoint={x:0,y:((textBottom-textTop)*0.5)+yShift,type:"spike"};
                    crossPoint=findIntersectY(spikePoint.x,spikePoint.y,textCenter.x,textCenter.y,textLeft);
                    crossPoint.y=crossPoint.y<textTop+opts.spikeGirth/2+opts.cornerRadius?textTop+opts.spikeGirth/2+opts.cornerRadius:crossPoint.y;
                    crossPoint.y=crossPoint.y>(textBottom-opts.spikeGirth/2)-opts.cornerRadius?(textBottom-opts.spikeGirth/2)-opts.cornerRadius:crossPoint.y;
                    points[points.length]={x:textLeft,y:crossPoint.y-opts.spikeGirth/2,type:"join"};
                    points[points.length]={x:textLeft,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textTop,type:"corner"};
                    points[points.length]={x:textRight,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:textBottom,type:"corner"};
                    points[points.length]={x:textLeft,y:crossPoint.y+opts.spikeGirth/2,type:"join"};
                    points[points.length]=spikePoint;
                    break
                }
                var canvas=$('<canvas width="'+(numb($text.outerWidth(true))+opts.strokeWidth*2)+'" height="'+(numb($text.outerHeight(true))+opts.strokeWidth*2)+'"></canvas>').appendTo($box).css({position:"absolute",top:$text.btPosition().top,left:$text.btPosition().left,zIndex:opts.boxzIndex}).get(0);
                if(typeof G_vmlCanvasManager!="undefined"){
                    canvas=G_vmlCanvasManager.initElement(canvas)
                }
                if(opts.cornerRadius>0){
                    var newPoints=new Array();
                    var newPoint;
                    for(var i=0;i<points.length;i++){
                        if(points[i].type=="corner"){
                            newPoint=betweenPoint(points[i],points[(i-1)%points.length],opts.cornerRadius);
                            newPoint.type="arcStart";
                            newPoints[newPoints.length]=newPoint;
                            newPoints[newPoints.length]=points[i];
                            newPoint=betweenPoint(points[i],points[(i+1)%points.length],opts.cornerRadius);
                            newPoint.type="arcEnd";newPoints[newPoints.length]=newPoint
                        }else{
                            newPoints[newPoints.length]=points[i]
                        }
                    }
                    points=newPoints
                }
                if(!$.browser.msie){
                    var ctx=canvas.getContext("2d");
                    drawIt.apply(ctx,[points],opts.strokeWidth);
                    ctx.fillStyle=opts.fill;
                    if(opts.shadow){
                        ctx.shadowOffsetX=2;
                        ctx.shadowOffsetY=2;
                        ctx.shadowBlur=5;
                        ctx.shadowColor=opts.shadowColor
                    }
                    ctx.closePath();
                    ctx.fill();
                    if(opts.strokeWidth>0){
                        ctx.shadowColor="rgba(0, 0, 0, 0)";
                        ctx.lineWidth=opts.strokeWidth;
                        ctx.strokeStyle=opts.strokeStyle;
                        ctx.beginPath();
                        drawIt.apply(ctx,[points],opts.strokeWidth);
                        ctx.closePath();ctx.stroke()
                    }
                }
                if(opts.animate){
                    $box.css({opacity:0.1})
                }
                $box.css({visibility:"visible"});
                if(opts.overlay){
                    var overlay=$('<div class="bt-overlay"></div>').css({position:"absolute",backgroundColor:"blue",top:top,left:left,width:width,height:height,opacity:".2"}).appendTo(offsetParent);
                    $(this).data("overlay",overlay)
                }
                var animParams={opacity:1};
                if(opts.animate){
                    switch(position){
                        case"top":
                            animParams.top=$box.btPosition().top+opts.distance;
                            break;
                        case"left":
                            animParams.left=$box.btPosition().left+opts.distance;
                            break;
                        case"bottom":
                            animParams.top=$box.btPosition().top-opts.distance;
                            break;
                        case"right":
                            animParams.left=$box.btPosition().left-opts.distance;
                            break
                        }
                        $box.animate(animParams,{duration:opts.speed,easing:opts.easing})
                    }
                    if((opts.ajaxPath!=null&&opts.ajaxCache==false)||ajaxTimeout){
                        content=false
                    }
                    if(opts.clickAnywhereToClose){
                        jQuery.bt.vars.clickAnywhereStack.push(this);
                        $(document).click(jQuery.bt.docClick)
                    }
                    if(opts.closeWhenOthersOpen){
                        jQuery.bt.vars.closeWhenOpenStack.push(this)
                    }
                    opts.postShow.apply(this)
                };
                this.btOff=function(){
                    opts.preHide.apply(this);
                    if(over)return;
                    var box=$(this).data("bt-box");
                    var overlay=$(this).data("bt-overlay");
                    if(typeof box=="object"){
                        $(box).remove();
                        $(this).removeData("bt-box")
                    }
                    if(typeof overlay=="object"){
                        $(overlay).remove();
                        $(this).removeData("bt-overlay")
                    }
                    jQuery.bt.vars.clickAnywhereStack=arrayRemove(jQuery.bt.vars.clickAnywhereStack,this);
                    jQuery.bt.vars.closeWhenOpenStack=arrayRemove(jQuery.bt.vars.closeWhenOpenStack,this);
                    opts.postHide.apply(this);
                    $(this).removeClass("bt-active "+opts.activeClass)
                    if(!$(this).hasClass('active')){
                        $(this).css({'background-position': '0 0'});
                    }
                };
                var refresh=this.btRefresh=function(){
                    this.btOff();
                    this.btOn()
                }
            });
            function drawIt(points,strokeWidth){
                this.moveTo(points[0].x,points[0].y);
                for(i=1;i<points.length;i++){
                    if(points[i-1].type=="arcStart"){
                        this.quadraticCurveTo(round5(points[i].x,strokeWidth),round5(points[i].y,strokeWidth),round5(points[(i+1)%points.length].x,strokeWidth),round5(points[(i+1)%points.length].y,strokeWidth));
                        i++
                    }else{
                        this.lineTo(round5(points[i].x,strokeWidth),round5(points[i].y,strokeWidth))
                    }
                }
            }
            function round5(num,strokeWidth){
                var ret;strokeWidth=numb(strokeWidth);
                if(strokeWidth%2){
                    ret=num
                }else{
                    ret=Math.round(num-0.5)+0.5
                }
                return ret
            }
            function numb(num){
                return parseInt(num)||0
            }
            function arrayRemove(arr,elem){
                var x,newArr=new Array();
                for(x in arr){
                    if(arr[x]!=elem){
                        newArr.push(arr[x])
                    }
                }
                return newArr
            }
            function betweenPoint(point1,point2,dist){
                var y,x;
                if(point1.x==point2.x){
                    y=point1.y<point2.y?point1.y+dist:point1.y-dist;
                    return{x:point1.x,y:y}
                }
                else{
                    if(point1.y==point2.y){
                        x=point1.x<point2.x?point1.x+dist:point1.x-dist;
                        return{x:x,y:point1.y}
                    }
                }
            }
            function centerPoint(arcStart,corner,arcEnd){
                var x=corner.x==arcStart.x?arcEnd.x:arcStart.x;
                var y=corner.y==arcStart.y?arcEnd.y:arcStart.y;
                var startAngle,endAngle;
                if(arcStart.x<arcEnd.x){
                    if(arcStart.y>arcEnd.y){
                        startAngle=(Math.PI/180)*180;
                        endAngle=(Math.PI/180)*90
                    }else{
                        startAngle=(Math.PI/180)*90;endAngle=0
                    }
                }else{
                    if(arcStart.y>arcEnd.y){
                        startAngle=(Math.PI/180)*270;
                        endAngle=(Math.PI/180)*180
                    }else{
                        startAngle=0;
                        endAngle=(Math.PI/180)*270
                    }
                }
                return{x:x,y:y,type:"center",startAngle:startAngle,endAngle:endAngle}
            }
            function findIntersect(r1x1,r1y1,r1x2,r1y2,r2x1,r2y1,r2x2,r2y2){
                if(r2x1==r2x2){
                    return findIntersectY(r1x1,r1y1,r1x2,r1y2,r2x1)
                }
                if(r2y1==r2y2){
                    return findIntersectX(r1x1,r1y1,r1x2,r1y2,r2y1)
                }
                var r1m=(r1y1-r1y2)/(r1x1-r1x2);
                var r1b=r1y1-(r1m*r1x1);
                var r2m=(r2y1-r2y2)/(r2x1-r2x2);
                var r2b=r2y1-(r2m*r2x1);
                var x=(r2b-r1b)/(r1m-r2m);
                var y=r1m*x+r1b;
                return{x:x,y:y}
            }
            function findIntersectY(r1x1,r1y1,r1x2,r1y2,x){
                if(r1y1==r1y2){
                    return{x:x,y:r1y1}
                }
                var r1m=(r1y1-r1y2)/(r1x1-r1x2);
                var r1b=r1y1-(r1m*r1x1);
                var y=r1m*x+r1b;
                return{x:x,y:y}
            }
            function findIntersectX(r1x1,r1y1,r1x2,r1y2,y){
                if(r1x1==r1x2){
                    return{x:r1x1,y:y}
                }
                var r1m=(r1y1-r1y2)/(r1x1-r1x2);
                var r1b=r1y1-(r1m*r1x1);
                var x=(y-r1b)/r1m;
                return{x:x,y:y}
            }
        };
        jQuery.fn.btPosition=function(){
            function num(elem,prop){
                return elem[0]&&parseInt(jQuery.curCSS(elem[0],prop,true),10)||0
            }
            var left=0,top=0,results;
            if(this[0]){
                var offsetParent=this.offsetParent(),offset=this.offset(),parentOffset=/^body|html$/i.test(offsetParent[0].tagName)?{top:0,left:0}:offsetParent.offset();offset.top-=num(this,"marginTop");
                offset.left-=num(this,"marginLeft");
                parentOffset.top+=num(offsetParent,"borderTopWidth");
                parentOffset.left+=num(offsetParent,"borderLeftWidth");
                results={top:offset.top-parentOffset.top,left:offset.left-parentOffset.left}
            }
            return results
        };
        jQuery.fn.btOn=function(){
            return this.each(
            function(index){
                if($.isFunction(this.btOn)){
                    this.btOn()
                }
            })
        };
        jQuery.fn.btOff=function(){
            return this.each(function(index){if($.isFunction(this.btOff)){this.btOff()}})
        };
        jQuery.bt={};
        jQuery.bt.vars={clickAnywhereStack:[],closeWhenOpenStack:[]};
        jQuery.bt.docClick=function(e){
            if(!e){
                var e=window.event
            }
            if(!$(e.target).parents().andSelf().filter(".bt-wrapper, .bt-active").length){
                $(jQuery.bt.vars.clickAnywhereStack).btOff();
                $(document).unbind("click",jQuery.bt.docClick)
            }
        };
        jQuery.bt.defaults={
            trigger:"hover",
            clickAnywhereToClose:true,
            closeWhenOthersOpen:false,
            width:"200px",
            height:'',
            padding:"10px",
            spikeGirth:10,
            spikeLength:15,
            overlap:0,
            overlay:false,
            killTitle:true,
            textzIndex:9999,
            boxzIndex:9998,
            wrapperzIndex:9997,
            positions:["most"],
            fill:"rgb(255, 255, 102)",
            windowMargin:10,
            strokeWidth:1,
            strokeStyle:"#000",
            cornerRadius:5,
            centerPointX:0.5,
            centerPointY:0.5,
            shadow:false,
            shadowOffsetX:2,
            shadowOffsetY:2,
            shadowBlur:3,
            shadowColor:"#000",
            animate:false,
            distance:15,
            easing:"swing",
            speed:200,
            cssClass:"",
            cssStyles:{},
            activeClass:"bt-active",
            contentSelector:"$(this).attr('title')",
            ajaxPath:null,
            ajaxError:"<strong>ERROR:</strong> <em>%error</em>",
            ajaxLoading:"<blink>Loading...</blink>",
            ajaxData:{},
            ajaxType:"GET",
            ajaxCache:true,
            ajaxOpts:{},
            preShow:function(){return},
            postShow:function(){return},
            preHide:function(){return},
            postHide:function(){return},
            hoverIntentOpts:{interval:300,timeout:500},
            wrapperOpacity:false,
            textBackground:'#f6f6f6',
            withCanvas:true,
            contentId: 'bt-content'
        };