if (document.images) {
	img1off = new Image();
	img1off.src = "/images/button1_off.gif";
	img1on = new Image();
	img1on.src = "/images/button1_on.gif";

	img2off = new Image();
	img2off.src = "/images/button2_off.gif";
	img2on = new Image();
	img2on.src = "/images/button2_on.gif";

	img3off = new Image();
	img3off.src = "/images/button3_off.gif";
	img3on = new Image();
	img3on.src = "/images/button3_on.gif";

	img4off = new Image();
	img4off.src = "/images/button4_off.gif";
	img4on = new Image();
	img4on.src = "/images/button4_on.gif";

	img5off = new Image();
	img5off.src = "/images/button5_off.gif";
	img5on = new Image();
	img5on.src = "/images/button5_on.gif";

	img6off = new Image();
	img6off.src = "/images/button6_off.gif";
	img6on = new Image();
	img6on.src = "/images/button6_on.gif";

	img7off = new Image();
	img7off.src = "/images/button7_off.gif";
	img7on = new Image();
	img7on.src = "/images/button7_on.gif";

	img8off = new Image();
	img8off.src = "/images/button8_off.gif";
	img8on = new Image();
	img8on.src = "/images/button8_on.gif";

	img9off = new Image();
	img9off.src = "/images/button9_off.gif";
	img9on = new Image();
	img9on.src = "/images/button9_on.gif";

	img10off = new Image();
	img10off.src = "/images/button10_off.gif";
	img10on = new Image();
	img10on.src = "/images/button10_on.gif";

	img11off = new Image();
	img11off.src = "/images/button11_off.gif";
	img11on = new Image();
	img11on.src = "/images/button11_on.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");
	}
}

// Function to 'tab' images.
function navTAB(navName) {
	if (document.images) {
		document.location = navName;
	}
}