/**
* 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!
*/

/**
* jquery.belatedPNG: Adds IE6/7/8 support: PNG images for CSS background-image and HTML <IMG/>.
* Author: Kazunori Ninomiya
* Email: Kazunori.Ninomiya@gmail.com
* Version: 0.0.4
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
*
* Example usage:
* $('.png_bg').fixPng();
**/
(function($){var doc=document;var DD_belatedPNG={ns:'DD_belatedPNG',imgSize:{},delay:10,nodesFixed:0,createVmlNameSpace:function(){if(doc.namespaces&&!doc.namespaces[this.ns]){doc.namespaces.add(this.ns,'urn:schemas-microsoft-com:vml')}},createVmlStyleSheet:function(){var screenStyleSheet,printStyleSheet;screenStyleSheet=doc.createElement('style');screenStyleSheet.setAttribute('media','screen');doc.documentElement.firstChild.insertBefore(screenStyleSheet,doc.documentElement.firstChild.firstChild);if(screenStyleSheet.styleSheet){var selector=!doc.documentMode||doc.documentMode<8?this.ns+'\\:*':this.ns+'\\:shape, '+this.ns+'\\:fill';screenStyleSheet=screenStyleSheet.styleSheet;screenStyleSheet.addRule(selector,'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'].join(';'));this.screenStyleSheet=screenStyleSheet;printStyleSheet=doc.createElement('style');printStyleSheet.setAttribute('media','print');doc.documentElement.firstChild.insertBefore(printStyleSheet,doc.documentElement.firstChild.firstChild);printStyleSheet=printStyleSheet.styleSheet;printStyleSheet.addRule(selector,'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}var propName=event.propertyName;if(propName.search('background')!=-1||propName.search('border')!=-1){DD_belatedPNG.applyVML(el)}if(propName=='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(propName.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)},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=doc.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'].join(';');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');doc.body.insertBefore(img,doc.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'){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:position.search('%')!=-1?bg[axis]=parseInt(position,10)/100: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){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$/)!=-1){el.isImg=true;el.style.visibility='hidden'}else{return}}else if(el.currentStyle.backgroundImage.toLowerCase().search('.png')==-1){return}lib=DD_belatedPNG;el.vml={color:{},image:{}};els={shape:{},fill:{}};for(v in el.vml){if(el.vml.hasOwnProperty(v)){for(e in els){if(els.hasOwnProperty(e)){nodeStr=lib.ns+':'+e;el.vml[v][e]=doc.createElement(nodeStr)}}el.vml[v].shape.stroked=false;if(el.nodeName=='IMG'){var width=el.width/96*72;var height=el.height/96*72;el.vml[v].fill.type='tile';el.vml[v].fill.size=width+'pt,'+height+'pt'}else if(el.currentStyle){var elStyle=el.currentStyle;if(elStyle.backgroundImage!='none'){var vmlBg=elStyle.backgroundImage;var img=doc.createElement("img");img.src=vmlBg.substr(5,vmlBg.lastIndexOf('")')-5);var run=img.runtimeStyle;var mem={w:run.width,h:run.height};run.width='auto';run.height='auto';w=img.width;h=img.height;run.width=mem.w;run.height=mem.h;var width=w/96*72;var height=h/96*72;el.vml[v].fill.type='tile';el.vml[v].fill.aspect='atleast';el.vml[v].fill.size=width+'pt,'+height+'pt'}}el.vml[v].shape.appendChild(el.vml[v].fill);el.parentNode.insertBefore(el.vml[v].shape,el)}}el.vml.image.shape.fillcolor='none';el.vml.color.fill.on=false;lib.attachHandlers(el);lib.giveLayout(el);lib.giveLayout(el.offsetParent);el.vmlInitiated=true;lib.applyVML(el)}};try{doc.execCommand("BackgroundImageCache",false,true)}catch(r){}DD_belatedPNG.createVmlNameSpace();DD_belatedPNG.createVmlStyleSheet();$.extend($.fn,{fixPng:function(){if([,]!=0){$.each(this,function(){DD_belatedPNG.fixPng(this)})}return this}})})(jQuery);