function PNG_loader() { 
   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;"; 
         if (img.align == "right") imgStyle += "float:right;"; 
         if (img.parentElement.href) imgStyle += "cursor:hand;"; 
         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--; 
      } 
   }
}
window.attachEvent("onload", PNG_loader);


function imagen(imageType,imageName,imageWidth,imageHeight,alt,posLeft,posTop) {
	newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",scrollbars=no,left="+posLeft+",top="+posTop);
	newWindow.document.open();
	newWindow.document.write('<html><title>'+alt+'</title><body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" onBlur="self.close()">'); 
	if (imageType == "swf"){
	newWindow.document.write('<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0\" width=\"'+imageWidth+'\" height=\"'+imageHeight+'\">');
	newWindow.document.write('<param name=movie value=\"'+imageName+'\"><param name=quality value=high>');
	newWindow.document.write('<embed src=\"'+imageName+'\" quality=high pluginspage=\"http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash\" type=\"application/x-shockwave-flash\" width=\"'+imageWidth+'\" height=\"'+imageHeight+'\">');
	newWindow.document.write('</embed></object>');	}else{
	newWindow.document.write('<img src=\"'+imageName+'\" width='+imageWidth+' height='+imageHeight+' alt=\"'+alt+'\">'); 	}
	newWindow.document.write('</body></html>');
	newWindow.document.close();
	newWindow.focus();
}

function evaluar(targ,selObj,restore) {
	eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	if (restore) selObj.selectedIndex=0;
}