localStorage cookies fallback

localStorage.js

/**
 * Adapted from gist by josedaniel
 * https://gist.github.com/1001363
 */
if (!window.localStorage){
	function createCookie(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	}
	 
	function readCookie(name){
		var result = null;
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' '){
				c = c.substring(1,c.length);	
			} 
			if (c.indexOf(nameEQ) == 0){
				result = c.substring(nameEQ.length,c.length);
				return result;
			}
		}
		return result;
	}
	
	localStorage = (function () {
		return {
			setItem: function (key, value) {
				if(value != null) createCookie(key, value, 3000);
			},
			 
			getItem: function (key) {
				return readCookie(key);
			},
			
			removeItem: function(a){
				this.setItem(a,'');
			}
		};
	})();
}