/**
 * @author User
 */
function popup(w,h,site) {
			x=screen.availWidth/2-w/2;
			y=screen.availHeight/2-h/2;
			var popupWindow=window.open(site,'','width='+w+',height='+h+',left='+x+',top='+y+',screenX='+x+',screenY='+y+',scrollbars=yes');
			return false;
		}