function Set_Cookie(name, value, expires, path, domain, secure){
	var today = new Date();
	today.setTime(today.getTime());
	if (expires){
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date(today.getTime() + (expires));
	document.cookie = name + "=" +escape(value) +
	((expires) ? ";expires=" + expires_date.toGMTString() : "") + 
	((path) ? ";path=" + path : "") + 
	((domain) ? ";domain=" + domain : "") +
	((secure) ? ";secure" : "");
}

function showhide(id){
	if (document.getElementById){
		obj = document.getElementById(id);
			if (obj.style.display == "none"){
				obj.style.display = "";				
				Set_Cookie("bnt_menu_state_"+ id,'visible');				
			}
			else {
				Set_Cookie("bnt_menu_state_"+ id,'hidden');				
				obj.style.display = "none";
			}
	}
}