function menuHover(e)
{
	var flag = true;
	e = e || window.event;
	var target = e.target || e.srcElement;
	target_id = target.id.replace("menu","");
	var i = $("menu" + target_id);
	i.src = i.src.indexOf("2") == -1  ? menuimages2[target_id].src : menuimages[target_id].src;
}

function placeEvents()
{
	var eAll = document.getElementsByTagName('img');
	var reg = new RegExp("^menu");
	for(var i = 0; i < eAll.length; i++)
	{
		if(eAll[i].id)
		{	
			if(reg.test(eAll[i].id))
			{
				eAll[i].onmouseover = menuHover;
				eAll[i].onmouseout = menuHover;
			}
		}	
	}
}

hided = 0;

function show_sub(i)
{
	hide();
	hided = i;
	$('submenu'+i).style.display = 'block';
	void(0);
}


function hide()
{
	if(hided) $('submenu'+hided).style.display = 'none';
}