/**
* DD_belatedPNG: Adds IE6 support: PNG images for CSS background-image and HTML <IMG/>.
* Author: Drew Diller
* Email: drew.diller@gmail.com
* URL: http://www.dillerdesign.com/experiment/DD_belatedPNG/
* Version: 0.0.8a
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
*
* Example usage:
* DD_belatedPNG.fix('.png_bg'); // argument is a CSS selector
* DD_belatedPNG.fixPng( someNode ); // argument is an HTMLDomElement
**/

/*
PLEASE READ:
Absolutely everything in this script is SILLY.  I know this.  IE's rendering of certain pixels doesn't make sense, so neither does this code!
*/

var DD_belatedPNG={ns:"DD_belatedPNG",imgSize:{},delay:10,nodesFixed:0,createVmlNameSpace:function(){if(document.namespaces&&!document.namespaces[this.ns])document.namespaces.add(this.ns,"urn:schemas-microsoft-com:vml")},createVmlStyleSheet:function(){var screenStyleSheet,printStyleSheet;screenStyleSheet=document.createElement("style");screenStyleSheet.setAttribute("media","screen");document.documentElement.firstChild.insertBefore(screenStyleSheet,document.documentElement.firstChild.firstChild);if(screenStyleSheet.styleSheet){screenStyleSheet=
screenStyleSheet.styleSheet;screenStyleSheet.addRule(this.ns+"\\:*","{behavior:url(#default#VML)}");screenStyleSheet.addRule(this.ns+"\\:shape","position:absolute;");screenStyleSheet.addRule("img."+this.ns+"_sizeFinder","behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;");this.screenStyleSheet=screenStyleSheet;printStyleSheet=document.createElement("style");printStyleSheet.setAttribute("media","print");document.documentElement.firstChild.insertBefore(printStyleSheet,
document.documentElement.firstChild.firstChild);printStyleSheet=printStyleSheet.styleSheet;printStyleSheet.addRule(this.ns+"\\:*","{display: none !important;}");printStyleSheet.addRule("img."+this.ns+"_sizeFinder","{display: none !important;}")}},readPropertyChange:function(){var el,display,v;el=event.srcElement;if(!el.vmlInitiated)return;if(event.propertyName.search("background")!=-1||event.propertyName.search("border")!=-1)DD_belatedPNG.applyVML(el);if(event.propertyName=="style.display"){display=
el.currentStyle.display=="none"?"none":"block";for(v in el.vml)if(el.vml.hasOwnProperty(v))el.vml[v].shape.style.display=display}if(event.propertyName.search("filter")!=-1)DD_belatedPNG.vmlOpacity(el)},vmlOpacity:function(el){if(el.currentStyle.filter.search("lpha")!=-1){var trans=el.currentStyle.filter;trans=parseInt(trans.substring(trans.lastIndexOf("=")+1,trans.lastIndexOf(")")),10)/100;el.vml.color.shape.style.filter=el.currentStyle.filter;el.vml.image.fill.opacity=trans}},handlePseudoHover:function(el){setTimeout(function(){DD_belatedPNG.applyVML(el)},
1)},fix:function(selector){if(this.screenStyleSheet){var selectors,i;selectors=selector.split(",");for(i=0;i<selectors.length;i++)this.screenStyleSheet.addRule(selectors[i],"behavior:expression(DD_belatedPNG.fixPng(this))")}},applyVML:function(el){el.runtimeStyle.cssText="";this.vmlFill(el);this.vmlOffsets(el);this.vmlOpacity(el);if(el.isImg)this.copyImageBorders(el)},attachHandlers:function(el){var self,handlers,handler,moreForAs,a,h;self=this;handlers={resize:"vmlOffsets",move:"vmlOffsets"};if(el.nodeName==
"A"){moreForAs={mouseleave:"handlePseudoHover",mouseenter:"handlePseudoHover",focus:"handlePseudoHover",blur:"handlePseudoHover"};for(a in moreForAs)if(moreForAs.hasOwnProperty(a))handlers[a]=moreForAs[a]}for(h in handlers)if(handlers.hasOwnProperty(h)){handler=function(){self[handlers[h]](el)};el.attachEvent("on"+h,handler)}el.attachEvent("onpropertychange",this.readPropertyChange)},giveLayout:function(el){el.style.zoom=1;if(el.currentStyle.position=="static")el.style.position="relative"},copyImageBorders:function(el){var styles,
s;styles={"borderStyle":true,"borderWidth":true,"borderColor":true};for(s in styles)if(styles.hasOwnProperty(s))el.vml.color.shape.style[s]=el.currentStyle[s]},vmlFill:function(el){if(!el.currentStyle)return;else{var elStyle,noImg,lib,v,img,imgLoaded;elStyle=el.currentStyle}for(v in el.vml)if(el.vml.hasOwnProperty(v))el.vml[v].shape.style.zIndex=elStyle.zIndex;el.runtimeStyle.backgroundColor="";el.runtimeStyle.backgroundImage="";noImg=true;if(elStyle.backgroundImage!="none"||el.isImg){if(!el.isImg){el.vmlBg=
elStyle.backgroundImage;el.vmlBg=el.vmlBg.substr(5,el.vmlBg.lastIndexOf('")')-5)}else el.vmlBg=el.src;lib=this;if(!lib.imgSize[el.vmlBg]){img=document.createElement("img");lib.imgSize[el.vmlBg]=img;img.className=lib.ns+"_sizeFinder";img.runtimeStyle.cssText="behavior:none; position:absolute; left:-10000px; top:-10000px; border:none; margin:0; padding:0;";imgLoaded=function(){this.width=this.offsetWidth;this.height=this.offsetHeight;lib.vmlOffsets(el)};img.attachEvent("onload",imgLoaded);img.src=el.vmlBg;
img.removeAttribute("width");img.removeAttribute("height");document.body.insertBefore(img,document.body.firstChild)}el.vml.image.fill.src=el.vmlBg;noImg=false}el.vml.image.fill.on=!noImg;el.vml.image.fill.color="none";el.vml.color.shape.style.backgroundColor=elStyle.backgroundColor;el.runtimeStyle.backgroundImage="none";el.runtimeStyle.backgroundColor="transparent"},vmlOffsets:function(el){var thisStyle,size,fudge,makeVisible,bg,bgR,dC,altC,b,c,v;thisStyle=el.currentStyle;size={"W":el.clientWidth+
1,"H":el.clientHeight+1,"w":this.imgSize[el.vmlBg].width,"h":this.imgSize[el.vmlBg].height,"L":el.offsetLeft,"T":el.offsetTop,"bLW":el.clientLeft,"bTW":el.clientTop};fudge=size.L+size.bLW==1?1:0;makeVisible=function(vml,l,t,w,h,o){vml.coordsize=w+","+h;vml.coordorigin=o+","+o;vml.path="m0,0l"+w+",0l"+w+","+h+"l0,"+h+" xe";vml.style.width=w+"px";vml.style.height=h+"px";vml.style.left=l+"px";vml.style.top=t+"px"};makeVisible(el.vml.color.shape,size.L+(el.isImg?0:size.bLW),size.T+(el.isImg?0:size.bTW),
size.W-1,size.H-1,0);makeVisible(el.vml.image.shape,size.L+size.bLW,size.T+size.bTW,size.W,size.H,1);bg={"X":0,"Y":0};if(el.isImg){bg.X=parseInt(thisStyle.paddingLeft,10)+1;bg.Y=parseInt(thisStyle.paddingTop,10)+1}else for(b in bg)if(bg.hasOwnProperty(b))this.figurePercentage(bg,size,b,thisStyle["backgroundPosition"+b]);el.vml.image.fill.position=bg.X/size.W+","+bg.Y/size.H;bgR=thisStyle.backgroundRepeat;dC={"T":1,"R":size.W+fudge,"B":size.H,"L":1+fudge};altC={"X":{"b1":"L","b2":"R","d":"W"},"Y":{"b1":"T",
"b2":"B","d":"H"}};if(bgR!="repeat"||el.isImg){c={"T":bg.Y,"R":bg.X+size.w,"B":bg.Y+size.h,"L":bg.X};if(bgR.search("repeat-")!=-1){v=bgR.split("repeat-")[1].toUpperCase();c[altC[v].b1]=1;c[altC[v].b2]=size[altC[v].d]}if(c.B>size.H)c.B=size.H;el.vml.image.shape.style.clip="rect("+c.T+"px "+(c.R+fudge)+"px "+c.B+"px "+(c.L+fudge)+"px)"}else el.vml.image.shape.style.clip="rect("+dC.T+"px "+dC.R+"px "+dC.B+"px "+dC.L+"px)"},figurePercentage:function(bg,size,axis,position){var horizontal,fraction;fraction=
true;horizontal=axis=="X";switch(position){case "left":case "top":bg[axis]=0;break;case "center":bg[axis]=0.5;break;case "right":case "bottom":bg[axis]=1;break;default:if(position.search("%")!=-1)bg[axis]=parseInt(position,10)/100;else fraction=false}bg[axis]=Math.ceil(fraction?size[horizontal?"W":"H"]*bg[axis]-size[horizontal?"w":"h"]*bg[axis]:parseInt(position,10));if(bg[axis]%2===0)bg[axis]++;return bg[axis]},fixPng:function(el){el.style.behavior="none";var lib,els,nodeStr,v,e;if(el.nodeName==
"BODY"||el.nodeName=="TD"||el.nodeName=="TR")return;el.isImg=false;if(el.nodeName=="IMG")if(el.src.toLowerCase().search(/\.png$/)!=-1){el.isImg=true;el.style.visibility="hidden"}else return;else if(el.currentStyle.backgroundImage.toLowerCase().search(".png")==-1)return;lib=DD_belatedPNG;el.vml={color:{},image:{}};els={shape:{},fill:{}};for(v in el.vml)if(el.vml.hasOwnProperty(v)){for(e in els)if(els.hasOwnProperty(e)){nodeStr=lib.ns+":"+e;el.vml[v][e]=document.createElement(nodeStr)}el.vml[v].shape.stroked=
false;el.vml[v].shape.appendChild(el.vml[v].fill);el.parentNode.insertBefore(el.vml[v].shape,el)}el.vml.image.shape.fillcolor="none";el.vml.image.fill.type="tile";el.vml.color.fill.on=false;lib.attachHandlers(el);lib.giveLayout(el);lib.giveLayout(el.offsetParent);el.vmlInitiated=true;lib.applyVML(el)}};try{document.execCommand("BackgroundImageCache",false,true)}catch(r){}DD_belatedPNG.createVmlNameSpace();DD_belatedPNG.createVmlStyleSheet();DD_belatedPNG.fix(".pngfix");