function pageName(name){

	var location = "" + document.location;

	var url = location.split('?');

	url = url[0].split('/');

	name = name + url[url.length-1];

	return name;

}

function createCookie(name,value,days,usePageName){

	if(usePageName != true)name = pageName(name);

	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 readCookie(name,usePageName){

	if(usePageName != true)name = pageName(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 0;

}

function eraseCookie(name, usePageName){

	if(usePageName != true)name = pageName(name);

	createCookie(name,"",-1, usePageName);

}