if (document.images) {
	roll_01_on = new Image();				// roll over Images
	roll_01_on.src ="../images/menu01_on01.gif";
	roll_02_on = new Image();
	roll_02_on.src ="../images/menu02_on01.gif";
	roll_03_on = new Image();
	roll_03_on.src ="../images/menu03_on01.gif";
	roll_04_on = new Image();
	roll_04_on.src ="../images/menu04_on01.gif";


	



	roll_01_off = new Image();				// Original Images
	roll_01_off.src ="../images/menu01_off01.gif";
	roll_02_off = new Image();
	roll_02_off.src ="../images/menu02_off01.gif";
	roll_03_off = new Image();
	roll_03_off.src ="../images/menu03_off01.gif";
	roll_04_off = new Image();
	roll_04_off.src ="../images/menu04_off01.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");
	}
}