/**
 *	A modified version of http://www.quirksmode.org/js/cookies.html
 */
var Cookie = {

	/**
	 * Create a new cookie. If the name already exists, overwrites.
	 * @param {string} name
	 * @param {string} value
	 * @param {int} days
	 */
	create : function(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=/';
	},
	
	/**
	 * Returns the value of a cookie.
	 * @param {string} name
	 */
	read : function(name) {
		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) return c.substring(nameEQ.length,c.length);
		}
		return null;
	},
	
	/**
	 * Deletes a cookie.
	 * @param {string} name
	 */
	erase : function(name) {
		this.createCookie(name,"",-1);
	}
}