function set_cookie(cookieName, cookieValue){
	var now = new Date();
	now.setDate(now.getDate() + 1);
	cookieString = escape(cookieName) + "=" + escape(cookieValue)+ ";expires=" + now.toUTCString();
	//alert(cookieString);
	document.cookie = cookieString;
}
	
function get_cookie ( cookie_name ){
  	var results = document.cookie.match ( '(^|;) ?' + cookie_name + '=([^;]*)(;|$)' );
	if ( results )
    	return ( unescape ( results[2] ) );
  	else
    	return null;
}