function createCookie(name, value)
{
	document.cookie=name+"="+escape(value)+"; path=/";
}

function readCookie(name)
{
	var input=name.replace(/([.*+?^=!:${}()|[\]\/\\])/g, "\\$1");
	var re=new RegExp("(?:^|;)\\s?"+input+"=(.*?)(?:;|$)", "i");
	var result=document.cookie.match(re);
	var output=null;
	if (result!=null)
	{
		output=unescape(result[1]);
	}
	return output;
}

function eraseCookie(name)
{
	var d=new Date();
	document.cookie=name+"=; path=/; expires="+d.toGMTString();
}