function checkBrowser(NSvers,NSpass,NSnoPass,MOvers,MOpass,MOnoPass,IEvers,IEpass,IEnoPass,OBpass,URL,altURL) { //v3.0
  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('Mozilla') != -1) {
    if (version >= MOvers || verStr.indexOf(MOvers) != -1)
     {if (MOpass>0) newURL=(MOpass==1)?URL:altURL;}
    else {if (MOnoPass>0) newURL=(MOnoPass==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) { window.location=unescape(newURL); document.returnValue=false; }
}