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) {
		pic_1_over = newImage("i/1_over.jpg");
		pic_2_over = newImage("i/2_over.jpg");
		pic_3_over = newImage("i/3_over.jpg");
		pic_4_over = newImage("i/4_over.jpg");
		pic_5_over = newImage("i/5_over.jpg");
		pic_6_over = newImage("i/6_over.jpg");
		i6_over = newImage("i/6.jpg");
		i5_over = newImage("i/5.jpg");
		i4_over = newImage("i/4.jpg");
		i3_over = newImage("i/3.jpg");
		i2_over = newImage("i/2.jpg");
		i1_over = newImage("i/1.jpg");
		preloadFlag = true;
	}
}