function mmenu(type, objId)
{
	//скрываем всё меню
	if(!mmenuItems) return;
	var toShow = document.getElementById('mainDiv_'+objId);
	if(!toShow) return;
		
	for(var i=0; i<mmenuItems.length; i++)
	{	
		var obj = document.getElementById('mainDiv_'+mmenuItems[i]);
		if(!obj) continue;
		obj.style.display = 'none';
	}	
	
	if(type != 'over') return;
	toShow.style.display = 'block';
}