function openWindow(URL){ 

newWindow = window.open(URL,"xxx", "height=500,width=520,scrollbars=yes,status=no ,too lbar=no,hotkeys=no,locationbar=no,fullscreen=0,res izable=0"); 
newWindow.moveTo(screen.availWidth/2-400,screen.availHeight/2-250); 
newWindow.focus(); 
} 

function MM_checkBrowser(NSvers,NSpass,NSnoPass,IEvers,IEpa ss,IEnoPass,OBpass,URL,altURL) { //v4.0 
var newURL='', verStr=navigator.appVersion, app=navigator.appName, version = parseFloat(verStr); 
if (app.indexOf('Netscape') != -1) { 
if (version >= NSvers) {if (NSpass>0) newURL=(NSpass==1)?URL:altURL;} 
else {if (NSnoPass>0) newURL=(NSnoPass==1)?URL:altURL;} 
} else if (app.indexOf('Microsoft') != -1) { 
if (version >= IEvers || verStr.indexOf(IEvers) != -1) 
{if (IEpass>0) newURL=(IEpass==1)?URL:altURL;} 
else {if (IEnoPass>0) newURL=(IEnoPass==1)?URL:altURL;} 
} else if (OBpass>0) newURL=(OBpass==1)?URL:altURL; 
if (newURL) { openWindow(unescape(newURL)); document.MM_returnValue=false; } 
}