//function replace in html documents
/*
function transparent(im) 
{
   if (!im.transparented && (/\.png/.test(im.src))) 
   {
      im.transparented = 1;
      var picture = im.src; var w = im.width; var h = im.height;
      im.src = "images/empty.gif";
      im.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod='scale', src='"+picture+"');";
      im.width = w; im.height = h;
   }
   return "transparent";
}
*/
/*function opacitied(el, op)
{
   if (!el.opacitiod && op!=100)
    {
        el.opacitiod = 1;
        if(el.style.filter != '')
        {
            el.style.filter = el.style.filter + " progid:DXImageTransform.Microsoft.Alpha(opacity='"+op+"');";
        }
        else
        {
            el.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity='"+op+"');";
        }
        //alert(el.style.filter);
    }
    return 'opacitied';
}*/
//function raplace backgrounds
function imgbck(el)
{
	if (el.imgbcked!=1 && ((/\.png/.test(el.currentStyle.backgroundImage)) | (/\.png/.test(el.background)))) 
	{
		el.imgbcked = 1;
		var bg	= !el.background ? el.currentStyle.backgroundImage : el.background;
		var src = bg.substring(5,bg.length-2);
		el.background = bg;
		el.style.background = "transparent";
		el.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod='scale', src='"+src+"');";
	}
}
function imgbckremove(el)
{
    if(el.imgbcked==1)
    {
        el.style.filter = "";
        el.imgbcked = 0;
    }
}