var g_browserMOZ = false;
var g_browserNS4 = false;
var g_browserIE4 = false;

function SniffBrowser()
{
//alert("Sniffing browser...");
  var browser = navigator.appName;
  var ver     = parseInt(navigator.appVersion);

  if ( (-1) != browser.indexOf("Netscape") )
  {
//alert("Browser Netscape... (ver: "+ver+")");
    if (4 == ver) {
      g_browserNS4 = true;
    } else if (ver >= 5) {
//alert("...and Moz");
      g_browserMOZ = true;
    }
  }
  else
  {
    if ( (browser.indexOf("Microsoft Internet Explorer") != (-1)) && (ver >= 4) ) {
      g_browserIE4 = true;  //IE 4 and higher
    }
  }

  //fix for IE browsers that don't support the W3C DOM
  if ( !(document.getElementById) ) {
    if (document.all) {
      document.getElementById    = function(str) {return document.all[str];};
      document.getElementsByName = function(str) {return document.all[str];};
    }
  }
}