if (document.images) {
	img1on = new Image();            // Active images
	img1on.src = "images/rental button2.gif";
	img2on = new Image();
	img2on.src = "images/contact button2.gif";
	img3on = new Image();
	img3on.src = "images/home button2.gif";
	img4on = new Image();
	img4on.src = "images/dips button2.gif";
	img5on = new Image();
	img5on.src = "images/price button2.gif";
	img6on = new Image();
	img6on.src = "images/links button2.gif";
	img7on = new Image();
	img7on.src = "images/gallery button2.gif";
	img1off = new Image();            // Inactive images
	img1off.src = "images/rental button1.gif"; 
	img2off = new Image();
	img2off.src = "images/contact button1.gif";
	img3off = new Image();
	img3off.src = "images/home button1.gif";
	img4off = new Image();
	img4off.src = "images/dips button1.gif";
	img5off = new Image();
	img5off.src = "images/price button1.gif";
	img6off = new Image();
	img6off.src = "images/links button1.gif";
	img7off = new Image();
	img7off.src = "images/gallery button1.gif";
        
  }
    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");        
            }
    }