// Correctly handle PNG transparency in Win IE 5.5 or higher.
// http://homepage.ntlworld.com/bobosola. Updated 02-March-2004

function correctPNG(){
   for(var i=0; i<document.images.length; i++){
	  var img = document.images[i]
	  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
		 i = i-1
	  }
	  //now correct the transparent png's used as background images in css
	  alphaBackgrounds();
   }
}

//corrects transparent png's used as background images in css
function alphaBackgrounds(){
	var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
	var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);
	for (i=0; i<document.all.length; i++){
		var bg = document.all[i].currentStyle.backgroundImage;
		if (itsAllGood && bg){
			if (bg.match(/\.png/i) != null){
				var mypng = bg.substring(5,bg.length-2);
				//use sizingMethod="crop" for background images you don't want to be scaled
				//or use sizingMethod="scale" if you want them to be scaled.
				document.all[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mypng+"', sizingMethod='crop')";
				document.all[i].style.backgroundImage = "url('/assets/images/x.gif')";
			}
		}
	}
}  

function correctSinglePNG(img){
	//alert("correctSinglePNG(" + img.src + ") called");

	var imgName = img.src.toUpperCase()
	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;" + "visibility: visible;"; 
	/*
	if (img.align == "left") imgStyle = "float:left;" + imgStyle;
	if (img.align == "right") imgStyle = "float:right;" + imgStyle;
	if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle;		
	
	*/

	if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer") {
		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;
	}else{
		//alert("Firefox detected");
		img.style.visibility = "visible";
	}
}



if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
	window.attachEvent("onload", correctPNG);
}