var logo_text, opacity;
var nav_items = new Array();
var swap_interval;
var nav_item;


function getNavigationItems(){
	var items = new Array();
	var elements = new Array();
	
	items = document.getElementsByTagName("span");
	for (i = 0; i < items.length; i++)
		if (items[i].className=="navigation_items"){
			elements[i] = items[i];
	}
	return elements;
}

function init(){
	logo_text = document.getElementById("logo_text");
	nav_item = document.getElementById("navigation_wrapper_l1");
	nav_items = getNavigationItems();
	opacity = 0.0;

	setTimeout("swap();", 300);
}

function swap(){
	swap_interval = setInterval("changeOpacity();", 50);
}

function changeOpacity(){
	if (opacity > 99)
		clearInterval(swap_interval);
	
	low = ++opacity;
	high = 100 - opacity;
	
	logo_text.style.opacity = high / 100;
	logo_text.style.filter = "alpha(style=0, opacity=" + high + ")";
	nav_item.style.opacity = low / 100;
	nav_item.style.filter = "alpha(style=0, opacity=" + low + ")";
}


function highlight(shite){
	var els = new Array();
	els = getNavigationItems();

	for (i = 2; i < els.length; i++){
		if (shite.id != "navigation_wrapper_l1"){
			if (els[i].id != shite.id) {
				els[i].style.filter = "alpha(style=0,opacity=40)";
				els[i].style.opacity = 0.4;
			}
			else {
				els[i].style.filter = "alpha(style=0,opacity=100)";
				els[i].style.opacity = 1.0;
			}
		}
		else {
			els[i].style.opacity = 1.0;
			els[i].style.filter = "alpha(style=0,opacity=100)";
		}
	}
}