/* 
Correctly handle PNG transparency in Win IE 5.5 & 6.
Copyright 2007 Ignia, LLC
Based in part on code from from http://homepage.ntlworld.com/bobosola.

Use in <HEAD> with DEFER keyword wrapped in conditional comments:
<!--[if lt IE 7]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->

*/

function fixPng() {
  var arVersion = navigator.appVersion.split("MSIE")
  var version = parseFloat(arVersion[1])

  if ((version >= 5.5 && version < 7.0) && (document.body.filters)) {
    for(var i=0; i<document.images.length; i++) {
      var img = document.images[i];
      var imgName = img.src.toUpperCase();
      if (imgName.indexOf(".gif") > 0) {
        var width = img.width;
        var height = img.height;
        var sizingMethod = (img.className.toLowerCase().indexOf("scale") >= 0)? "scale" : "image"; 
        img.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src.replace('%23', '%2523').replace("'", "%27") + "', sizingMethod='" + sizingMethod + "')";
        img.src = "images/blank.gif";
        img.width = width;
        img.height = height;
        }
      }
    }
  }

fixPng();


    //Í¼Æ¬µÈ±ÈËõ·Å
    function DrawImage(ImgD,FitWidth,FitHeight){
         var image=new Image();
         image.src=ImgD.src;
         if(image.width>0 && image.height>0){
             if(image.width/image.height>= FitWidth/FitHeight){
                 if(image.width>FitWidth){
                     ImgD.width=FitWidth;
                     ImgD.height=(image.height*FitWidth)/image.width;
                 }else{
                     ImgD.width=image.width; 
                    ImgD.height=image.height;
                 }
             } else{
                 if(image.height>FitHeight){
                     ImgD.height=FitHeight;
                     ImgD.width=(image.width*FitHeight)/image.height;
                 }else{
                     ImgD.width=image.width; 
                    ImgD.height=image.height;
                 } 
            }
         }
     }


