function imagePopup(imagename,w,h)
{
	var url = imagename;
	var newwin = window.open(url,'popup','width='+w+',height='+h+',top='+150+',left='+(screen.width-w)/2+',location=0,directories=0,status=no,menuBar=no,scrollBars=no,resizable=no');
	if (newwin != null)
		newwin.focus();	
}