function popIt(url, h, w)
		{ 
			win_height = (h - 0) + 30;
			//alert (win_height);
			win_width = (w - 0) + 30;
			
		    LeftPosition = (screen.width) ? (screen.width-win_width)/2 : 0;
		    TopPosition = (screen.height) ? (screen.height-win_height)/2 : 0;
		    window.open(url, 'popup', 'width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',screenY='+TopPosition+',screenX='+LeftPosition+',toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no');
			
		}