function showNav(id)
{
	
	hideAll();
	
	var navItem = document.getElementById(id);
	//if (navItem.className=="nav_menu")
	{
		navItem.style.display = 'block';	
	}
		
}

function hideAll()
{
	var Nodes = document.getElementsByTagName('div');
    var max = Nodes.length;
    for(var i = 0;i < max;i++) {
            var nodeObj = Nodes.item(i);
            //alert(nodeObj.className);
            if (nodeObj.className=="nav_subitem") {
            	nodeObj.style.display = 'none';
            }
    }
}

function setPageNav()
{
	hideAll();
	
	if ($str_page_cat > " ")
	{
		showNav($str_page_cat);
	}
}