<!--

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		bt1_over = newImage("images/bt-1-on.gif");
		bt2_over = newImage("images/bt-2-on.gif");
		bt3_over = newImage("images/bt-3-on.gif");
		bt4_over = newImage("images/bt-4-on.gif");
		bt5_over = newImage("images/bt-5-on.gif");
		bt6_over = newImage("images/bt-6-on.gif");
		bt7_over = newImage("images/bt-7-on.gif");
		bt8_over = newImage("images/bt-8-on.gif");
		bt9_over = newImage("images/bt-9-on.gif");
		preloadFlag = true;
	}
}

// -->