var popUp; 

var winX=0, winY=0;

var isOpera=(navigator.userAgent.indexOf("Opera")!=-1)?true:false;
var isOpera5=(navigator.appVersion.indexOf("MSIE 5")!=-1 && navigator.userAgent.indexOf("Opera 5")!=-1)?true:false;
var isOpera6=(navigator.appVersion.indexOf("MSIE 5")!=-1 && navigator.userAgent.indexOf("Opera 6")!=-1)?true:false;
var isN6=(navigator.userAgent.indexOf("Gecko")!=-1);
var isN4=(document.layers)?true:false;
var isMac=(navigator.userAgent.indexOf("Mac")!=-1);
var isIE=(document.all && !isOpera && (!isMac || navigator.appVersion.indexOf("MSIE 4")==-1))?true:false;

function PopupWindow(url, width, height)
{
  popUp = window.open(url, '','width=' + width + ',height=' + height + 'status=yes,toolbar=no,menubar=no,scrollbars=1');
}

function WindowOpen(url)
{
  popup = window.open(url, null);
}