function popUpCentered(page,name,w,h,x,y,scroll)
		{
		 	if (screen && screen.height)
				{
				 	t = Math.round((screen.height - h)/2)+y;
				 	l = Math.round((screen.width - w)/2)+x;
				}
	
			top.open(page,name,"top="+t+",left="+l+",height="+h+",width="+w+",status=no,toolbar=no,menubar=no,location=no,titlebar=yes,resizable=no,statusbar=no,scrollbars="+scroll);
		}