/*IE6的PNG背景透明处理*/
function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
{
     var arVersion = navigator.appVersion.split("MSIE")
     var version = parseFloat(arVersion[1])
     if ((version >= 5.5) && (document.body.filters)) 
     {
       for(var j=0; j<document.images.length; j++)
       {
           var img = document.images[j]
           var imgName = img.src.toUpperCase()
           if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
           {
             var imgID = (img.id) ? "id='" + img.id + "' " : ""
             var imgClass = (img.className) ? "class='" + img.className + "' " : ""
             var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
             var imgStyle = "display:inline-block;" + img.style.cssText 
             if (img.align == "left") imgStyle = "float:left;" + imgStyle
             if (img.align == "right") imgStyle = "float:right;" + imgStyle
             if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
             var strNewHTML = "<span " + imgID + imgClass + imgTitle
             + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
             + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
             + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
             img.outerHTML = strNewHTML
             j = j-1
           }
       }
     }    
}
window.attachEvent("onload", correctPNG);
   


/*按比例生成缩略图*/
function DrawImage(MyPic,W,H){
  var flag=false;
  var image=new Image();
  image.src=MyPic.src;
  if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= W/H){
      if(image.width>W){  
        MyPic.width=W;
        MyPic.height=(image.height*W)/image.width;
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
    else{
      if(image.height>H){  
        MyPic.height=H;
        MyPic.width=(image.width*H)/image.height;     
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
  }
} 


function MM_jumpMenu(selObj) 
{ //v3.0 
if(selObj.options[selObj.selectedIndex].value != "" ) 
{ 
window.open(selObj.options[selObj.selectedIndex].value,'','height=400,width=600,top=200,left=200,toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes,location=yes,status=yes'); 
} 
}