function SubMenuShow(MenuItemId,MenuSubItemId){
	var MenuSubList = document.getElementById('menu_naglowek').getElementsByTagName('div');
	for(var i = 0; MenuSubList.length > i; i++){
		if(MenuSubList[i].id.indexOf('sub') !== -1){ MenuSubList[i].style.display='none'; }
	}
	var MenuSub = document.getElementById(MenuSubItemId);
	if(MenuSub){
		var obj = document.getElementById(MenuItemId);
		var nleft = 0;
		var ntop = 0;
		if (obj.offsetParent) {
			nleft = obj.offsetLeft
			ntop = obj.offsetTop
			while (obj = obj.offsetParent) {
				nleft += obj.offsetLeft
				ntop += obj.offsetTop
			}
		}
		MenuSub.style.top = ntop + 30 + 'px';
		MenuSub.style.left = nleft + 'px';
		MenuSub.style.display = 'block';
	}
}

var SubMenuHideTimeout;

function SubMenuHideTime(MenuItem){
	SubMenuHideTimeout = setTimeout('SubMenuHide(\''+MenuItem+'\');', 10);
}

function SubMenuHide(MenuItemId){
	MenuItem = document.getElementById(MenuItemId);
	if(MenuItem){
		MenuItem.style.display='none';
	}
}

function SubMenuHideTimeCancel(){
	clearTimeout(SubMenuHideTimeout);
}