if (document.images) {
	idx_01_on = new Image();				// roll over Images
	idx_01_on.src ="images/idx_menu01b.gif";
	idx_02_on = new Image();
	idx_02_on.src ="images/idx_menu02b.gif";
	idx_03_on = new Image();
	idx_03_on.src ="images/idx_menu03b.gif";
	idx_04_on = new Image();
	idx_04_on.src ="images/idx_menu04b.gif";
	idx_05_on = new Image();
	idx_05_on.src ="images/idx_menu05b.gif";
	idx_06_on = new Image();
	idx_06_on.src ="images/idx_menu06b.gif";
	idx_07_on = new Image();
	idx_07_on.src ="images/idx_menu07b.gif";
	idx_08_on = new Image();
	idx_08_on.src ="images/idx_menu08b.gif";
	idx_09_on = new Image();
	idx_09_on.src ="images/idx_menu09b.gif";
	idx_10_on = new Image();
	idx_10_on.src ="images/idx_menu10b.gif";
	idx_11_on = new Image();
	idx_11_on.src ="images/idx_menu11b.gif";


	extension_on = new Image();
	extension_on.src ="images/extensionb.gif";
	extension_off = new Image();
	extension_off.src ="images/extensiona.gif";




	idx_01_off = new Image();				// Original Images
	idx_01_off.src ="images/idx_menu01a.gif";
	idx_02_off = new Image();
	idx_02_off.src ="images/idx_menu02a.gif";
	idx_03_off = new Image();
	idx_03_off.src ="images/idx_menu03a.gif";
	idx_04_off = new Image();
	idx_04_off.src ="images/idx_menu04a.gif";
	idx_05_off = new Image();
	idx_05_off.src ="images/idx_menu05a.gif";
	idx_06_off = new Image();
	idx_06_off.src ="images/idx_menu06a.gif";
	idx_07_off = new Image();
	idx_07_off.src ="images/idx_menu07a.gif";
	idx_08_off = new Image();
	idx_08_off.src ="images/idx_menu08a.gif";
	idx_09_off = new Image();
	idx_09_off.src ="images/idx_menu09a.gif";
	idx_10_off = new Image();
	idx_10_off.src ="images/idx_menu10a.gif";
	idx_11_off = new Image();
	idx_11_off.src ="images/idx_menu11a.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");
	}
}