var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "Navigateur inconnu";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "version inconnu";
		
		if(this.versionChg && this.version == "version inconnu"){
			this.versionSearchString = this.versionChgSearchString;
			this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "version inconnu";
		}
	},
	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;
			this.versionLength = data[i].versionLength || null;
			this.versionChg = data[i].versionChg || false;
			this.versionChgSearchString = data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
		return false;
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return false;
	
		if(this.versionLength){
			return dataString.substr(index+this.versionSearchString.length+1, this.versionLength);
		}else{
			return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
		}
	},

	checkBrowser: function(){
		 for (var i=0;i<this.acceptedBrowser.length;i++)	{
			var dataName = this.acceptedBrowser[i].identity;
			var versionMin = this.acceptedBrowser[i].versionMin;
			
			if(dataName == this.browser && parseFloat(this.version) >= parseFloat(versionMin)){
				return true;
			}
		 }
		 return false;
	},
	
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome",
			versionLength: 3
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version",
			versionLength: 6
		},
		{			
			prop: window.opera,
			identity: "Opera",
			versionSearch: "Version",
			versionLength: 5,
			versionChg: true
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox",
			versionLength: 5
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Internet Explorer",
			versionSearch: "MSIE",
			versionLength: 3
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],

	acceptedBrowser : [
		{
			identity: "Firefox",
			versionMin: "3"
		},
		{
			identity: "Internet Explorer",
			versionMin: "7"
		},
		{
			identity: "Opera",
			versionMin: "10"
		},		
		{
			identity: "Chrome",
			versionMin: "3"
		},
		{
			identity: "Safari",
			versionMin: "3"
		}
	]
};


$(document).ready(function(){
	BrowserDetect.init();
	
	$("#infoNav").html(BrowserDetect.browser+" "+BrowserDetect.version);
	if(!BrowserDetect.checkBrowser()){
		$("#formulaire").hide();
		$("#browserDetection").show();
	}
});