var switch_timer = new Array();

switch_timer['who'] = null;
switch_timer['what'] = null;

function navItem()
{
	this.url = arguments[0];
}

var nav_item = new Array();

nav_item['who1'] = new navItem('who.php');
nav_item['who2'] = new navItem('personalities.php');
nav_item['who3'] = new navItem('contact.php');
nav_item['what1'] = new navItem('what.php');
nav_item['what2'] = new navItem('process.php');
nav_item['what3'] = new navItem('work.php');

function navSwitchOn(idx)
{
	document.getElementById('mainnav' + idx).style.zIndex += 1;
	document.getElementById('mainnav' + idx).style.visibility = 'visible';

	imageSwap('main_nav_' + idx, 'images/spacer.gif');
	imageSwap('main_nav_' + idx + '_arrow', 'images/spacer.gif');
}

function navSwitchOff(idx)
{
	imageSwap('main_nav_' + idx, 'images/main_nav_' + idx + '.gif');
	imageSwap('main_nav_' + idx + '_arrow', 'images/arrow_anim_blue.gif');

	document.getElementById('mainnav' + idx).style.zIndex -= 1;
	document.getElementById('mainnav' + idx).style.visibility = 'hidden';
}

function navStopSwitchTimer(idx)
{
	if (switch_timer[idx] != null)
	{
		clearTimeout(switch_timer[idx]);
	}
}

function navStartSwitchTimer(idx)
{
	switch_timer[idx] = setTimeout('navSwitchOff("' + idx + '")', 100);
}

function navOver(idx)
{
	imageSwap('nav_' + idx, 'images/nav_' + idx + '_roll.gif');

	var navkey = (idx.substring(0,3) == 'who') ? 'who' : 'what';
	navStopSwitchTimer(navkey);
}

function navOut(idx)
{
	imageSwap('nav_' + idx, 'images/nav_' + idx + '.gif');

	var navkey = (idx.substring(0,3) == 'who') ? 'who' : 'what';
	navStartSwitchTimer(navkey);
}

function navClick(idx)
{
	location.href = nav_item[idx].url;
}