if (document.images) {
factson = new Image(); 
factson.src = "images/navfactson.jpg";
factsoff = new Image();
factsoff.src = "images/navfacts.jpg";

qaon = new Image(); 
qaon.src = "images/navqaon.jpg";
qaoff = new Image();
qaoff.src = "images/navqa.jpg";

resourceson = new Image(); 
resourceson.src = "images/navresourceson.jpg";
resourcesoff = new Image();
resourcesoff.src = "images/navresources.jpg";

contacton = new Image(); 
contacton.src = "images/navcontacton.jpg";
contactoff = new Image();
contactoff.src = "images/navcontact.jpg";

helpfulon = new Image(); 
helpfulon.src = "images/navhelpfulon.jpg";
helpfuloff = new Image();
helpfuloff.src = "images/navhelpful.jpg";

participateon = new Image(); 
participateon.src = "images/navparticipatingon.jpg";
participateoff = new Image();
participateoff.src = "images/navparticipating.jpg";
	}

function imgOn(imgName) {

if (document.images) {
document[imgName].src = eval(imgName + "on.src");
}
}

function imgOff(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src");
}
}