if (document.images) { // Active Images
	
	img1on = new Image();
	img1on.src = "/Graphics/darkover2006-b.gif";

	img1off = new Image();
	img1off.src = "/Graphics/darkover2006-a.gif";

	img2on = new Image();
	img2on.src = "/Graphics/darkover2007-b.gif";

	img2off = new Image();
	img2off.src = "/Graphics/darkover2007-a.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");
    }
}