/**
 * Utility for creating, reading and deleting cookies.
 *
 * Based on http://www.quirksmode.org/js/cookies.html (July 5, 2007)
 * wich is not copyrighted, according to http://www.quirksmode.org/about/copyright.html (July 5, 2007)
 */
Cookies = {
	
	set:function(name,value,days) {
		var expires = "";
		if (days) {
			var date = new Date();
			date.setTime( date.getTime()+(days*24*60*60*1000) );
			expires = "; expires=" + date.toGMTString();
		}
			
		document.cookie = name + "=" + value + expires + "; path=/";
	},
	
	get: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;
	},
	
	erase:function(name) {
		Cookies.set(name,"",-1);
	}	
}