/*!
	* JS Redirection Mobile
	*
	* Copyright (c) 2010 Sebastiano Armeli-Battana (http://sebarmeli.com)
	* MIT Licensed: http://www.opensource.org/licenses/mit-license.php
	* @link http://github.com/sebarmeli/JS-Redirection-Mobile-Site/
	*/

	/* 
	* This version is exactly the same as redirection_mobile.js, but it's an anonymous self-executing
	* function, and it's using the default values for param ("isStandardSite"), mobile_prefix("m"),
	* and cookie_hour(1). In this way you can drop this file on your web server with o configuration
	* 
	* @author Sebastiano Armeli-Battana
	* @version 0.3 
	* 
	*/

	/*globals window, redirection_mobile, document, navigator, location */
	(function (window, document, navigator) {

	    // Helper function
	    var addTimeToDate = function (msec) {

	        // Get the current date
	        var exdate = new Date();

	        // Add time to the date
	        exdate.setTime(exdate.getTime() + msec);

	        //Return the new Date
	        return exdate;

	    };

	    // Retrieve the User Agent of the browser
	    var agent = navigator.userAgent.toLowerCase(),

	    // param value or default value
			param = "isStandardSite",

	    // Constant
			TRUE = "true",

	    // "m" is the default mobile hostname prefix 
			mobile_prefix = "m",

	    // URL host of incoming request
		    host = document.location.host,

	    // Compose the mobile hostname
			mobile_host = mobile_prefix + "." +
							(!!host.match(/^www\./i) ?
								host.substring(4) :
									host),

	    // Expiry hours for cookie
			cookie_hours = 1,

	    // Check if the UA is a mobile one (iphone, ipod, android, blackberry)
			isUAMobile = !!(agent.match(/(iPhone|iPod|blackberry|android|htc|kindle|lg|midp|mmp|mobile|nokia|opera mini|palm|pocket|psp|sgh|smartphone|sonyericsson|symbian|treo mini)/i));

	    // Check if the referrer was a mobile page of the site
	    // (in that case we need to set a variable in the sessionStorage or in the cookie)
	    if (document.referrer.indexOf(mobile_host) >= 0) {
	        if (window.sessionStorage) {
	            window.sessionStorage.setItem(param, TRUE);
	        } else {
	            document.cookie = param + "=" + TRUE + ";expires=" +
													addTimeToDate(3600 * 1000 * cookie_hours).toUTCString();
	        }
	    }

	    // Check if the sessionStorage contain the parameter
	    var isSessionStorage = (window.sessionStorage) ?
								(window.sessionStorage.getItem(param) === TRUE) :
								 false,

	    // Check if the Cookie has been set up
			isCookieSet = document.cookie ?
							(document.cookie.indexOf(param) >= 0) :
								false;

	    // Check that User Agent is mobile, cookie is not set or value in the sessionStorage not present
	    if (isUAMobile && !(isCookieSet || isSessionStorage)) {
	        //Dont redirect - show the message 
	        //document.location.href = document.location.protocol + "//" + mobile_host;
	        $(document).ready(function () {
	            $("#switchMobile a.mobile").attr("href", document.location.protocol + "//" + mobile_host); 
                $("#footer .footerSitemap #footerMobile a").attr("href", document.location.protocol + "//" + mobile_host);
	            $("#footer .footerSitemap #footerMobile").show();
                $("#switchMobile").fadeIn();
	            $("#switchMobile a.classic").click(function () {
	                if (window.sessionStorage) {
	                    window.sessionStorage.setItem(param, TRUE);
	                } else {
	                    document.cookie = param + "=" + TRUE + ";expires=" +
													addTimeToDate(3600 * 1000 * cookie_hours).toUTCString();
	                }
	                $("#switchMobile").fadeOut();
	            });
	        });
	    } else if (isUAMobile) {
	        $(document).ready(function () {
                $("#footer .footerSitemap #footerMobile a").attr("href", document.location.protocol + "//" + mobile_host);
	            $("#footer .footerSitemap #footerMobile").show();
	        });
	    }

	} (window, document, navigator));