/* Copyright 2008 by Terry McNavage. All rights reserved. */

(function() {

var lively = {
	n1: "-51px",
	n2: "-118px",
	n3: "-196px",
	n4: "-252px",
	n5: "-290px",
	n6: "-331px",
	n7: "-373px",
	n8: "-428px",
	n9: "-510px",
	n10: "-573px",
	n11: "-637px"
};

function bind(n, t, f, p) {
	if (n.addEventListener) n.addEventListener(t, f, !!p);
	else if (n.attachEvent) n.attachEvent("on" + t, f);
}

function wake() {
	if (!document.getElementById) return;
	var i, n, f;
	for (i in lively) {
		n = document.getElementById(i);
		if (!n) continue;
		bind(n, "mouseover", swap);
		bind(n, "mouseout", swap);
	}
	// for mast logo
	bind(document.getElementById("logo"), "click", function() { location.href = "index.html"; });
	// just for contact page
	if (f = document.getElementById("submit")) {
		(new Image()).src = "images/blue.gif";
		bind(f, "mouseover", function() { f.src = "images/blue.gif"; });
		bind(f, "mouseout", function() { f.src = "images/grey.gif"; });
	}
}

function swap(e) {
	if (!e) e = window.event;
	var t = e.target || e.srcElement;
	switch(e.type) {
		case "mouseover":
			t.style.background = "url(images/nav.gif) " + lively[t.id] + " -30px no-repeat";
			break;
		case "mouseout":
			t.style.background = "transparent none";
			break;
	}
}

bind(window, "load", wake);

})();