// preload images

res_des_build_off = new Image();
res_des_build_off.src = "images/nav/res_des_build_off.gif";
res_des_build_on = new Image();
res_des_build_on.src = "images/nav/res_des_build_on.gif";

res_build_off = new Image();
res_build_off.src = "images/nav/res_build_off.gif";
res_build_on = new Image();
res_build_on.src = "images/nav/res_build_on.gif";

com_build_off = new Image();
com_build_off.src = "images/nav/com_build_off.gif";
com_build_on = new Image();
com_build_on.src = "images/nav/com_build_on.gif";

// global variables.  DO NOT EDIT

var currentLink;
var openNavItem1;
var openNavItem2;
var openNavItem3;

function fillNav1(displayId,contentId) {
	if(openNavItem1) {
		document.getElementById(openNavItem1).innerHTML = "";
		document.getElementById('res_des_build_img').src = eval(displayId + "_off.src");
		openNavItem1 = "";
	} else {
		document.getElementById(displayId).innerHTML = document.getElementById(contentId).innerHTML;
		document.getElementById('res_des_build_img').src = eval(displayId + "_on.src");
		openNavItem1 = displayId;
	}
}


function fillNav2(displayId,contentId) {
	if(openNavItem2) {
		document.getElementById(openNavItem2).innerHTML = "";
		document.getElementById('res_build_img').src = eval(displayId + "_off.src");
		openNavItem2 = "";
	} else {
		document.getElementById(displayId).innerHTML = document.getElementById(contentId).innerHTML;
		document.getElementById('res_build_img').src = eval(displayId + "_on.src");
		openNavItem2 = displayId;
	}
}


function fillNav3(displayId,contentId) {
	if(openNavItem3) {
		document.getElementById(openNavItem3).innerHTML = "";
		document.getElementById('com_build_img').src = eval(displayId + "_off.src");
		openNavItem3 = "";
	} else {
		document.getElementById(displayId).innerHTML = document.getElementById(contentId).innerHTML;
		document.getElementById('com_build_img').src = eval(displayId + "_on.src");
		openNavItem3 = displayId;
	}
}

function changeSubStyle(linkObject) {
	if(currentLink) {
		currentLink.className = "subNavLink";
	}
	linkObject.className = "subNavLinkOn";
	currentLink = linkObject;
}