// navigation script

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) {
		button_04_over = newImage("button/button_04-over.gif");
		button_06_button_04_over = newImage("button/button_06-button_04_over.gif");
		button_06_over = newImage("button/button_06-over.gif");
		button_07_button_08_over = newImage("button/button_07-button_08_over.gif");
		button_08_button_06_over = newImage("button/button_08-button_06_over.gif");
		button_08_over = newImage("button/button_08-over.gif");
		button_09_button_10_over = newImage("button/button_09-button_10_over.gif");
		button_10_button_08_over = newImage("button/button_10-button_08_over.gif");
		button_10_over = newImage("button/button_10-over.gif");
		button_11_button_12_over = newImage("button/button_11-button_12_over.gif");
		button_12_button_10_over = newImage("button/button_12-button_10_over.gif");
		button_12_over = newImage("button/button_12-over.gif");
		button_14_button_12_over = newImage("button/button_14-button_12_over.gif");
		button_14_over = newImage("button/button_14-over.gif");
		button_16_button_14_over = newImage("button/button_16-button_14_over.gif");
		button_16_over = newImage("button/button_16-over.gif");
		preloadFlag = true;
	}
}