function setOpacity(id,opacity)
{
	obj=document.getElementById(id);
	opacity=(opacity==100) ? 99.999 : opacity;
	obj.style.filter = "alpha(opacity:"+opacity+")";
	obj.style.KHTMLOpacity = opacity/100;
	obj.style.MozOpacity = opacity/100;
	obj.style.opacity = opacity/100;
}

function popupCenter(pageURL,title,w,h)
{
	var left = (screen.width/2)-(w/2);
	var top = (screen.height/2)-(h/2);
	var targetWin = window.open(pageURL, title, 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
}