function classSwapping(a,o,c1,c2)
    {
      switch (a){
        case 'swap':
          o.className =! classSwapping('check',o,c1)?o.className.replace(c2,c1):
          o.className.replace(c1,c2);
        break;
        case 'add':
          if(!classSwapping('check',o,c1)){o.className+=o.className?' '+c1:c1;}
        break;
        case 'remove':
          var rep=o.className.match(' '+c1)?' '+c1:c1;
          o.className=o.className.replace(rep,'');
        break;
        case 'check':
          return new RegExp('\\b'+c1+'\\b').test(o.className)
        break;
      }
    }

  function getHTTPRequest()
  {
    var xmlHttp;
    try
    {
      // Firefox, Opera 8.0+, Safari
      xmlHttp=new XMLHttpRequest();
    }
    catch (e)
    {
      // Internet Explorer
      try
      {
        xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
        try
        {
          xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (e)
        {
          alert("Your browser does not support AJAX, which is required to use this website.");
          xmlHttp = false;
        }
      }
    }
    return xmlHttp;
  }
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function showSubs()
{
  for(var i = 0; i < this.childNodes.length; i++)
  {
    if(this.childNodes[i].tagName == 'DIV')
    {
      for(var e = 0; e < this.childNodes[i].childNodes.length; e++)
      {
        if(this.childNodes[i].childNodes[e].tagName == 'UL')
        {
          classSwapping('remove', this.childNodes[i].childNodes[e], 'hidden');
        }
      }
    }
  }
}

function hideSubs()
{
  for(var i = 0; i < this.childNodes.length; i++)
  {
    if(this.childNodes[i].tagName == 'DIV')
    {
      for(var e = 0; e < this.childNodes[i].childNodes.length; e++)
      {
        if(this.childNodes[i].childNodes[e].tagName == 'UL')
        {
          classSwapping('add', this.childNodes[i].childNodes[e], 'hidden');
        }
      }
    }
  }
}
function addHoverControls(obj)
{
  //alert(obj.tagName + ' : ' + obj.id);
  obj.onmouseover = showSubs;
  obj.onmouseout = hideSubs;
}

function checkForSubNavigation()
{
  var listItems = document.getElementsByTagName('li');
  if(listItems)
  {
    for(var i = 0; i < listItems.length; i++)
    {
      if(classSwapping('check', listItems[i], 'hasSubs'))
      {
        addHoverControls(listItems[i]);
      }
    }
  }
}