// JavaScript Document
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<array.length; i+=2) {
			document[array[i]].src = array[i+1];
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		
		nav_04_down = newImage("images/nav_04-down.gif");
		nav_04_sel = newImage("images/nav_04-sel.gif");
		nav_05_down = newImage("images/nav_05-down.gif");
		nav_05_sel = newImage("images/nav_05-sel.gif");
		nav_06_down = newImage("images/nav_06-down.gif");
		nav_06_sel = newImage("images/nav_06-sel.gif");
		nav_07_down = newImage("images/nav_07-down.gif");
		nav_07_sel = newImage("images/nav_07-sel.gif");
		nav_08_down = newImage("images/nav_08-down.gif");
		nav_08_sel = newImage("images/nav_08-sel.gif");
		nav_09_down = newImage("images/nav_09-down.gif");
		nav_09_sel = newImage("images/nav_09-sel.gif");
		nav_10_over = newImage("images/nav_10-over.gif");
		nav_10_down = newImage("images/nav_10-down.gif");
		nav_10_sel = newImage("images/nav_10-sel.gif");
		preloadFlag = true;
	}
}