var imageOnSuffix = "_on.gif";
var imageOffSuffix = "_off.gif";

// rollover functions
function img_act(target) {
	if (document.images)
		document[target].src = (imagePrefix + imageOnSuffix);
}

function img_inact(target) {
	if (document.images)
		document[target].src = (pathtoroot + 'images/global/null_1x1.gif');
}



function makeArray() { 
	var args = makeArray.arguments;
    	for (var i = 0; i < args.length; i++) {	this[i] = args[i]; }
	this.length = args.length;
}
var imageNames = new makeArray(
		"home",
		"lplogin",
		"press",
		"contactus",
		"czip",
		"czf"
	);

var navPrefix = pathtoroot + "images/global/roll_";	
var navOnSuffix = "_on.gif";
var navOffSuffix = "_off.gif";

// preload gifs
if (document.images) {
	var i;
	var imagesOn = new Array();
	for ( i=0 ; i<imageNames.length ; i++ ) {
		imagesOn[i] = new Image();
		imagesOn[i].src = (navPrefix + imageNames[i] + navOnSuffix);
		
	}
}

// rollover functions
function nav_act(target) {
	if (document.images)
		document[target].src = (navPrefix + target + navOnSuffix);
}

function nav_inact(target) {
	if (document.images)
		document[target].src = (navPrefix + target + navOffSuffix);
}