function changeImagesOff(imageName) {
	  document[imageName].src = 'images/' + imageName + 'Off.gif';
}

function changeImagesOn(imageName) {
	  document[imageName].src = 'images/' + imageName + 'Over.gif';
}

function preloadImages() {
	loadImage("images/navCompanyOver.gif");
	loadImage("images/navSolutionsOver.gif");
	loadImage("images/navServicesOver.gif");
	loadImage("images/navPartnersOver.gif");
	loadImage("images/navContactUsOver.gif");

	return true;
}

function loadImage(src) {
	var tempImage = new Image();
	tempImage.src = src;
}