// JavaScript Document
function openWin(w,h,file) { 
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0; 
TopPosition = (screen.height) ? (screen.height-h)/2 : 0; 
open(file, '','width='+w+',height='+h+',status=no,toolbar=no,scrollbars=no,resizable=no,menubar=no,top='+TopPosition+',left='+LeftPosition+''); 
} ;