var IsIE = false;
var IEVersion = 0;
if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent)
{
  var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
  
  if (rslt != null);
    IEVersion = Number(rslt[1]);
  
  IsIE = true;
 
  if ( IEVersion < 7)
  {
	  for (var i = document.images.length - 1, img = null; (img = document.images[i]); i--) {
	
		  if (img.src.match(/\.png$/i) != null) {
			  img.style.visibility = "hidden";
		  }
	  }	  
    window.attachEvent("onload", fnLoadPngs);
  }
  
}

var ParentDir = "";
function fnLoadPngs() {
  
  if ( ! IsIE ) return;
  
  try
  {
    ParentDir = parent.top.GetRootDir();
  }
  catch( ex )
  {
  
  }
  
  
	var itsAllGood = (IEVersion >= 5.5 && IEVersion < 7);
  
  if ( ! itsAllGood )
    return;
	
	for (var i = document.images.length - 1, img = null; (img = document.images[i]); i--) {
	
		if (img.src.match(/\.png$/i) != null) {
			fnFixPng(img);
			img.attachEvent("onpropertychange", fnPropertyChanged);
			
			img.style.visibility = "visible";
		}
	}
	
	

	var nl = document.getElementsByTagName("INPUT");
	for (var i = nl.length - 1, e = null; (e = nl[i]); i--) {
		if (e.className && e.className.match(/\bimage\b/i) != null) {
			if (e.src.match(/\.png$/i) != null) {
				fnFixPng(e);
				e.attachEvent("onpropertychange", fnPropertyChanged);
			}
			e.style.visibility = "visible";
		}
	}
}

function fnPropertyChanged() {
	if (window.event.propertyName == "src") {
		var el = window.event.srcElement;
		if (!el.src.match(/clear\.gif$/i)) {
			el.filters.item(0).src = el.src;
			el.src = "Images/clear.gif";
		}
	}
}

function fnFixPng(img) {
	var src = img.src;
	
	if ( img.width )
	{
	  img.style.width = img.width + "px";
	  img.style.height = img.height + "px";
	}
	
	img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='scale')"
	img.src = ParentDir + "Images/clear.gif";
}