function initMenu()
{
	var menu = document.getElementById('menu');
	var lis = menu.getElementsByTagName('li');
	menu.className="menu";
	for ( var i=0; i<lis.length; i++ )
	{            
		if ( lis.item(i).getElementsByTagName('ul')[0] )
		{
				addAnEvent(lis.item(i),'keyup',visible);
				addAnEvent(lis.item(i),'mouseover',visible);
				addAnEvent(lis.item(i),'mouseout',hidden);
				addAnEvent(lis.item(i),'blur',hidden);
				addAnEvent(lis.item(i),'focus',visible);
		}
	}
}

function addAnEvent( target, eventName, functionName )
{
	eval('target.on'+eventName+'=functionName');
}
    
function hidden()
{
	this.getElementsByTagName('ul')[0].style.visibility = "hidden";
}

function visible()
{
	this.getElementsByTagName('ul')[0].style.visibility = "visible";
}
    
window.onload=initMenu;

function hideload () 
{
	if (document.getElementById('nav'))
	{
	 var div_obj = document.getElementById('nav') ; 
	 div_obj.style.display = "block" ;
	}
	return true; 
}