function closebar(){
  document.getElementById("topbar").style.display="none";
  setCookie("dismissed", "1", 1);
}

function setCookie(c_name, value ,expiredays) {
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}