/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

function openmenu(id_menu){

	cancelclosetime();

	// close old layer
	if(ddmenuitem){
        ddmenuitem.style.visibility = 'hidden';
    }

	// get new layer and show it
	ddmenuitem = document.getElementById(id_menu);
	ddmenuitem.style.visibility = 'visible';

}

function cancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

function closemenu()
{
	if(ddmenuitem){
        ddmenuitem.style.visibility = 'hidden';
    }
}

// go close timer
function closetime()
{
	closetimer = window.setTimeout(closemenu, timeout);
}