function trim(str) {
	return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}
function retrieveCookieValue(name) {
	name = name + "=";
	var cookieArray = document.cookie.split(";");
	var rtnCookie = null;

	for ( var i = 0; rtnCookie == null && i < cookieArray.length; i++) {
		var cookie = cookieArray[i];
		cookie = trim(cookie);
		if (cookie.indexOf(name) == 0)
			rtnCookie = cookie.substring(name.length, cookie.length);
	}
	return rtnCookie;
}
function createCookie(name, value) {
	var date = new Date();
	date.setTime(date.getTime() + (60 * 100));	//6 second expiry
	document.cookie = name + "=" + value + "; expires=" + date.toGMTString() + "; path=/";	
}
function isCookieSupportEnabled() {
	createCookie("COOKIESENABLED", "true");
	var cookieVal = retrieveCookieValue("COOKIESENABLED");	
	return (cookieVal == "true");
}
function checkCookie() {
	if (isCookieSupportEnabled()) {
		//alert("cookies are supported");
	        document.getElementById("cookies-disabled").style.display = "none";		
	}
	else {
	        //alert("cookies are not supported");
		document.getElementById("cookies-disabled").style.display = "block";
	}
}
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: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			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.userAgent,
			subString: "iPhone",
			identity: "iPhone/iPod"
	        },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]
};

function detectBrowser()
{
    BrowserDetect.init();

    if (BrowserDetect.browser == "Netscape" || BrowserDetect.browser == "Mozilla" || BrowserDetect.browser == "Chrome" || BrowserDetect.browser == "Opera" || BrowserDetect.browser == "Camino" || BrowserDetect.browser == "Konqueror" || BrowserDetect.browser == "iCab" || BrowserDetect.browser == "OmniWeb") {
	//alert("Your browser is not acceptable");
        document.getElementById("browser-detect").style.display = "block";
    }
	else if (BrowserDetect.browser == "Safari" && BrowserDetect.version < "2") {
        //alert("Your browser is Safari");
        document.getElementById("browser-detect-v").style.display = "block";
    }
	else if (BrowserDetect.browser == "Firefox" && BrowserDetect.version < "2") {
        //alert("Your browser is Firefox");
        document.getElementById("browser-detect-v").style.display = "block";
    }
	else if (BrowserDetect.browser == "Explorer" && BrowserDetect.version < "6") {
        //alert("Your browser is IE");
        document.getElementById("browser-detect-v").style.display = "block";
	}
    else {
         //do nothing
         //alert("your browser is supported");
    }
}
window.onload = function() {
    checkCookie();
    detectBrowser();
}