function HasRuntimeVersion(v)
	{
	  var va = GetVersion(v);
	  var i;
	  var a = navigator.userAgent.match(/\.NET CLR [0-9.]+/g);
	  var b = navigator.userAgent.toLowerCase().indexOf("windows nt 6") > -1;
	  
	  if (a == ".NET CLR 3.5")
		{
			a = new Array();
			a[0] = ".NET CLR 3.5.21022";
		}


	  // IE match
	  if (a != null)
	    for (i = 0; i < a.length; ++i)
	      if (CompareVersions(va, GetVersion(a[i])) <= 0)
			return true;

	  // Vista match
	  if (b == true)
	    return true;
		
	  return false;
	}
	function GetVersion(v)
	{
		var a = v.match(/([0-9]+)\.([0-9]+)\.([0-9]+)/i);
		return a.slice(1);
	}
	function CompareVersions(v1, v2)
	{
	  for (i = 0; i < v1.length; ++i)
	  {
	    var n1 = new Number(v1[i]);
	    var n2 = new Number(v2[i]);
	    if (n1 < n2)
	      return -1;
	    if (n1 > n2)
	      return 1;
	  }
	  return 0;
	}

	
	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: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		}
	]	};