// JavaScript Document
//SCRIPT FOR DROP DOWN MENU

var updatedNavPos, scrollFixed;

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

// open hidden layer
function mopen(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';
}

// go close timer
function mclosetime()
{
	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; 
//END OF DROP DOWN MENU SCRIPT

function updateNavScroll() {
	var pos = window.scrollY;
	if (!topNavPos) {
		topNavPos = 120;
	}
	var st = document.getElementById('floatingNavDiv');
	if (pos < topNavPos && updatedNavPos != 'absolute') {
		st.style.position = 'absolute';
		st.style.top = topNavPos + 'px';
		updatedNavPos = 'absolute';
		//alert('Switched to absolute');
	} else if (pos >= topNavPos && updatedNavPos != 'fixed') {
		st.style.position = 'fixed';
		st.style.top = '0';	
		updatedNavPos = 'fixed';
		//alert('Switched to fixed');
	}
}
updateNavScroll();