//<script>
var str_nav_on = null;
var str_sub_nav_on = null;
var str_sub_nav_on_project = null;
function LockNavOn(s)
{
	var o = document.getElementById('nav_' + s);
	if(o != null) o.className = 'MenuItemOn';
}
function LockNavOnSub(s)
{
	var o = document.getElementById('sub_nav_' + s);
	if(o != null) o.className = 'MenuItemSubOn';
}
function LockNavOnSub_project(s)
{
	var o = document.getElementById('project_nav_' + s);
	if(o != null) o.className = 'MenuItemSubOn_project';
}


function NavOn(s)
{
	o = document.getElementById('nav_' + s);
	if(o == null) return;
	if(o.className == 'MenuItemOn') return;

	o.className = 'MenuItemOn';
	str_nav_on = 'nav_' + s;
}

function NavOut()
{
	if(str_nav_on == null) return;
	o = document.getElementById(str_nav_on);
	if(o == null) return;
	o.className = 'MenuItem';
	str_nav_on = null;

}
function SubNavOn(s)
{
	o = document.getElementById('sub_nav_' + s);
	if(o == null) return;
	if(o.className == 'MenuItemSubOn') return;

	o.className = 'MenuItemSubOn';
	str_sub_nav_on = 'sub_nav_' + s;
}

function SubNavOut()
{
	if(str_sub_nav_on == null) return;
	o = document.getElementById(str_sub_nav_on);
	if(o == null) return;
	o.className = 'MenuItemSub';
	str_sub_nav_on = null;

}
function SubNavOn_project(s)
{
	o = document.getElementById('project_nav_' + s);
	if(o == null) return;
	if(o.className == 'MenuItemSubOn_project') return;

	o.className = 'MenuItemSubOn_project';
	str_sub_nav_on_project = 'project_nav_' + s;
}

function SubNavOut_project()
{
	if(str_sub_nav_on_project == null) return;
	o = document.getElementById(str_sub_nav_on_project);
	if(o == null) return;
	o.className = 'MenuItemSub_project';
	str_sub_nav_on_project = null;

}