function DisplayPngByBrowser(browser, img_path, width, height, alt) {
		if(alt == undefined) alt = '';
    if (browser == 'Microsoft Internet Explorer') {
			document.write('<img src="./gfx/blank.gif" title="'+alt+'" alt="'+alt+'" style="width:'+width+'px; height:'+height+'px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\''+img_path+'\', sizingMethod=\'scale\');" >');
		}else{
			document.write("<img src='"+img_path+"' alt='"+alt+"' title='"+alt+"'/>");
		}
	}