// png képek átalakítása Internet Explorer számára

// forrás: http://vbence.web.elte.hu/ie_png_alpha.html

// szerzo: Varga Bence

function alphaFixIE() {

	var s, i, j;

	// IMG

	var els = document.getElementsByTagName("IMG");

	for (i=0; i<els.length; i++) {

		s = els[i].src;

		if (s.toLowerCase().indexOf(".png") != -1) {

			els[i].src = "blank.gif";

			els[i].style.filter += "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + s + "', sizingMethod=image);";

		}

	}

	// CSS: background

	for (i=0; i<document.styleSheets.length; i++) {

		var pos = document.styleSheets[i].href.lastIndexOf("/");

		var cssDir = (pos != -1) ? document.styleSheets[i].href.substring(0, pos + 1) : "";

		for (j=0; j<document.styleSheets[i].rules.length; j++) {

			var style = document.styleSheets[i].rules[j].style;

			if (style.backgroundImage.toLowerCase().indexOf(".png") != -1) {

				var filename = style.backgroundImage.substring(4, style.backgroundImage.length - 1);

				if (filename.indexOf("http://") != 0 && filename.indexOf("/") != 0)

					filename = cssDir + filename;

				style.backgroundImage = "none";

				style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + filename + "', sizingMethod='crop');";

			}

		}

	}

}

if (navigator.userAgent.indexOf("MSIE") != -1 && navigator.userAgent.indexOf("Windows") != -1)

	window.attachEvent("onload", alphaFixIE);