if (document.images) {            // Active Images
	img1on = new Image();      
    img1on.src = "bank/nav_bio_on.gif"; 
	img2on = new Image();      
    img2on.src = "bank/nav_samples_on.gif";
	img3on = new Image();      
    img3on.src = "bank/nav_gallery_on.gif";
	img4on = new Image();      
    img4on.src = "bank/nav_link_on.gif";
	img5on = new Image();      
    img5on.src = "bank/nav_contact_on.gif";
	
	
    img1off = new Image();      
    img1off.src = "bank/nav_bio_off.gif"; 
	img2off = new Image();      
    img2off.src = "bank/nav_samples_off.gif";
	img3off = new Image();      
    img3off.src = "bank/nav_gallery_off.gif";
	img4off = new Image();      
    img4off.src = "bank/nav_link_off.gif";
	img5off = new Image();      
    img5off.src = "bank/nav_contact_off.gif";    
	
}



// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}
// -->