function imgArray() { 
	var args = imgArray.arguments;
    	for (var x = 0; x < args.length; x++) {	this[x] = args[x]; }
	this.length = args.length;
}
var navNames = new imgArray("rightprods","expert","responsive","continuous");
//var navPrefix = "/images/global/nav_";
var navPrefix = "/graphics/nav_";
var navOnSuffix = "_on.gif";
var navOffSuffix = "_off.gif";

// preload gifs
if (document.images) {
	var x;
	var navOn = new Array();
	for ( x=0 ; x<navNames.length ; x++ ) {
		navOn[x] = new Image();
		navOn[x].src = (navPrefix + navNames[x] + 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);
}