var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;
var _idx=0;
// open hidden layer
function mopen(id)
{
	if(GetObject(_idx+'i')) GetObject(_idx+'i').src='/images/'+lang+_idx+'.gif';	
    _idx=id;
	// cancel close timer
	mcancelclosetime();

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

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

}
// close showed layer
function mclose()
{ 
	if(ddmenuitem) {
		ddmenuitem.style.visibility = 'hidden';
		if(GetObject(_idx+'i')) GetObject(_idx+'i').src='/images/'+lang+_idx+'.gif';
	}
}

// go close timer
function mclosetime(mnu)
{
	closetimer = window.setTimeout('mclose()', timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;