function rollOver(imgName,imgRollVar) {
		document[imgName].src = eval(imgRollVar + ".src");
	}
	
	// about
	var aboutup = new Image(298,50);
	aboutup.src = "images/about-up.jpg";
	var abouthover = new Image(298,50);
	abouthover.src = "images/about-hover.jpg";
	
	// workplace
	var workplaceup = new Image(298,50);
	workplaceup.src = "images/workplace-up.jpg";
	var workplacehover = new Image(298,50);
	workplacehover.src = "images/workplace-hover.jpg";
	
	// training
	var trainingup = new Image(298,50);
	trainingup.src = "images/training-up.jpg";
	var traininghover = new Image(298,50);
	traininghover.src = "images/training-hover.jpg";
	
	// mediation
	var mediationup = new Image(298,50);
	mediationup.src = "images/mediation-up.jpg";
	var mediationhover = new Image(298,50);
	mediationhover.src = "images/mediation-hover.jpg";
	
	// contact
	var contactup = new Image(298,50);
	contactup.src = "images/contact-up.jpg";
	var contacthover = new Image(298,50);
	contacthover.src = "images/contact-hover.jpg";