function register_user( )
 {
  var sLink;

  sLink = "";

  if ( window.navigator.appName.indexOf("Explorer") > 0 )
   {
    var IE = true;
   }
  else
   {
    var IE = false;
   }

  if ( window.navigator )
   {
    with ( window.navigator )
     {
      sLink += "appName=" + appName + "&";
      sLink += "appVersion=" + appVersion + "&";
      sLink += "cookieEnabled=" + cookieEnabled + "&";
      sLink += "platform=" + platform + "&";
      sLink += "userAgent=" + userAgent + "&";

      if ( IE == true )
       {
        if ( browserLanguage ) sLink += "browserLanguage=" + browserLanguage + "&";
        if ( cpuClass ) sLink += "cpuClass=" + cpuClass + "&";
        if ( systemLanguage ) sLink += "systemLanguage=" + systemLanguage + "&";
        if ( userLanguage ) sLink += "userLanguage=" + userLanguage + "&";
       }
     }
   }

  if ( window.screen )
   {
    with ( window.screen )
     {
      sLink += "height=" + height + "&";
      sLink += "width=" + width + "&";
      sLink += "colorDepth=" + colorDepth + "&";
     }
   }

  if ( window.document )
   {
    with ( window.document )
     {
      if ( referrer ) sLink += "referrer=" + referrer + "&";
      if ( URL ) sLink += "URL=" + URL + "&";

      if ( IE == true )
       {
        if ( charset ) sLink += "charset=" + charset + "&";
        if ( defaultCharset ) sLink += "defaultCharset=" + defaultCharset + "&";
       }
     }
   } 

  document.getElementById('hulpreg').src = "./js/stats.php?action=1&" + sLink;

 }

function register_click( productID )
 {  
  var sLink;

  sLink = "";  
  sLink += "productID=" + productID;
  
  document.getElementById('hulpreg').src = "./js/stats.php?action=2&" + sLink;
 }