// JavaScript Document

function setupMenu() {
	var menu = document.getElementById('menu');
	var images = menu.getElementsByTagName('img');
	for(var i=0; i < images.length; i++) {
		images[i].onmouseover = function() {setMenuImage(this, 3);};
		images[i].onmouseout = function() {setMenuImage(this, 1);};
		if (
			(images[i].src.indexOf('menu_home') > -1 && document.location.href.indexOf('index.html') > -1) || 
			(images[i].src.indexOf('menu_new_equip') > -1 && document.location.href.indexOf('new_equipment.html') > -1) || 
			(images[i].src.indexOf('menu_used_equip') > -1 && document.location.href.indexOf('used_equipment.html') > -1) || 
			(images[i].src.indexOf('menu_brokerage') > -1 && document.location.href.indexOf('brokerage.html') > -1) || 
			(images[i].src.indexOf('menu_about_us') > -1 && document.location.href.indexOf('about_us.html') > -1) || 
			(images[i].src.indexOf('menu_contact_us') > -1 && document.location.href.indexOf('contact_us.html') > -1)
		) {
			images[i].onmouseover = null;
			images[i].onmouseout = null;
			setMenuImage(images[i], 2);
		}
	}
}
function setMenuImage(img, num){
	basename = img.src;
	basename = basename.substr(0,basename.lastIndexOf('_'));
	img.src = basename+ '_' + num + '.gif';
}