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


var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_button02_over = newImage('img/button02-over.gif');
		pre_button03_over = newImage('img/button03-over.gif');
		pre_button04_over = newImage('img/button04-over.gif');
		pre_button05_over = newImage('img/button05-over.gif');
		pre_button06_over = newImage('img/button06-over.gif');
		pre_button07_over = newImage('img/button07-over.gif');
		pre_button08_over = newImage('img/button08-over.gif');
		pre_button09_over = newImage('img/button09-over.gif');
		preloadFlag = true;
	}
}