if (document.images) {

//rollovers
		about = new Image();
		about_down = new Image();
		solutions = new Image();
		solutions_down = new Image();
		services = new Image();
		services_down = new Image();
		why = new Image();
		why_down = new Image();
		industries = new Image();
		industries_down = new Image();
		contact = new Image();
		contact_down = new Image();

		about.src = "../_images/btn-about.gif";
		about_down.src = "../_images/btn-about_on.gif";
		solutions.src = "../_images/btn-solutions.gif";
		solutions_down.src = "../_images/btn-solutions_on.gif";
		services.src = "../_images/btn-services.gif";
		services_down.src = "../_images/btn-services_on.gif";
		why.src = "../_images/btn-why.gif";
		why_down.src = "../_images/btn-why_on.gif";
		industries.src = "../_images/btn-industries.gif";
		industries_down.src = "../_images/btn-industries_on.gif";
		contact.src = "../_images/btn-contact.gif";
		contact_down.src = "../_images/btn-contact_on.gif";

}

function buttonOn(imageName) {
	if (document.images) {
		document[imageName].src = eval(imageName+"_down.src")
		}
	}

function buttonOff(imageName) {
	if (document.images) {
		document[imageName].src = eval(imageName+".src")
		}
	}