function readCookie(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; } 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 eraseCookie(name) { 	createCookie(name,"",-1); }