/**
 * Cookie
 * http://svn.latower.com/main/trunk/cookies 
 *
 * Copyright (c) 2008 Gilles Ruppert (http://latower.com)
 * 
 * Version: 0.1
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * this script gives you easy methods to create, write & delete cookies
 *
 * Example:
 * cookie.set('example', 'cookievalue', days_until_expiry)
 * cookie.get('example')
 * cookie.erase('example')
 *
 * inspired by PPK http://www.quirksmode.org/js/cookies.html
 */


var cookie = {
	
	// set cookie method
  set: function (name, value, days) {
		var exp = new Date();
		var expires = "";
		// if days have been provided, set the expiry date
		if (days){
			exp.setTime(exp.getTime() + (days*24*60*60*1000));
			expires =  "; expires=" + exp.toGMTString();
		} else {
			expires = "";
		}
		var domain = window.location.hostname;
		document.cookie = name + '=' + value + expires + '; path=/';
	},
	
	// get method
	get: function (name) {
		var nameEQ = name + "=";
		var cookies = document.cookie.split(';');
		
		for(var i=0; i < cookies.length; i++) {
			var c = cookies[i];
			
			// remove leading spaces
			c = c.replace(/^ +?/gi, '');
			
			// check whether the current cookie is the one we are looking for
			// if yes, return it 
			if (c.indexOf(nameEQ) == 0) {
				return c.substring(nameEQ.length,c.length);						
			}
		}
		return null;
	},
	
	// erase the cookie
	erase: function (name) {
		cookie.set(name,"",-1);
	}
};