// JavaScript Document
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 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 EraseCookie(name) {
	createCookie(name,"",-1);
}

// this function gets the cookie, if it exists
function GetCookie(name) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;

	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
		return null;

	if ( start == -1 )
		return null;

	var end = document.cookie.indexOf( ";", len );

	if ( end == -1 )
		end = document.cookie.length;

	return unescape( document.cookie.substring( len, end ) );
}