/*
*
*	Browser Detection
*	Version: 1.0
*	Date Created: 16.07.09
*
*/

var BrowserDetect = Class.create();

BrowserDetect.prototype = {
	initialize: 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";
		this.supported = false;
		
		this.checkBrowser();
		
	},
	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));
	},
	unsupported: function() {
		
		unsupportedArr = [
							{
								userAgent:'Explorer',
								version:6
							},
							{
								userAgent:'Explorer',
								version:5
							}
						]
						
		var browser = this.browser;
		var version = this.version;
		var supported = false;
		unsupportedArr.each(function(s, index) {
  			if(	s['userAgent'] == browser && s['version'] == version) {	
				 supported = true;
			}
		});
		
		this.supported = supported;
		
	},
	checkBrowser: function () {
	
		this.unsupported();
		
		if( this.supported == true) {
			$('browser-support').show();
			$('browser-notice').update( this.browser + " " + this.version + ' - Your browser is not supported by this website and may cause unexpected results. Please upgrade to the latest version.');
		}
		
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{		// 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"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		}
	]

};