function navActive(value)
{
	document.getElementById('nav_' + value).src = 'images/nav_' + value + '-over.gif';
}

function navInactive(value)
{
	if(value != pageID || pageID == '00')
	{
		document.getElementById('nav_' + value).src = 'images/nav_' + value + '.gif';
	}
}
	
function updateNav()
{
	if(pageID != '00')
	{
		document.getElementById('nav_' + pageID).src = 'images/nav_' + pageID + '-over.gif';
	}
}