// this function sets the cookie value, tied to the session
function setcookie( name, value ) 
{
	path = '/';
	document.cookie = name + "=" +escape( value ) +
	( ( path ) ? ";path=" + path : "" );
}

// this function gets the cookie, if it exists
function Get_Cookie( 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 ) );
}