// JavaScript Document
var timeout= 400;
var timer_close= 0;
var menuitem= 0;

//åben menuen
function open_menu(id)
{	
	//kald annuler timeout lukning
	cancel_close();
	//Fjern den gamle drop down menu
	if(menuitem) menuitem.style.visibility = 'hidden';
	//Vis den nye drop down menu
	menuitem = document.getElementById(id);
	menuitem.style.visibility = 'visible';
}

//Luk drop down menuen
function close_menu()
{
	if(menuitem) menuitem.style.visibility = 'hidden';
} 

//luk menuen, når timeouten nås
function timeout_close()
{
	timer_close = window.setTimeout(close_menu, timeout);
}

//annuller timeout lukning
function cancel_close()
{
	if(timer_close)
	{
		window.clearTimeout(timer_close);
		timer_close = null;
	}
}

//ved klik, fjern drop down menu
document.onclick = close_menu;