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) {
		index_03_over = newImage("images/index_03-over.gif");
		index_05_over = newImage("images/index_05-over.gif");
		index_07_over = newImage("images/index_07-over.gif");
		index_09_over = newImage("images/index_09-over.gif");
		index_11_over = newImage("images/index_11-over.gif");
		index_13_over = newImage("images/index_13-over.gif");
		index_15_over = newImage("images/index_15-over.gif");
		index_17_over = newImage("images/index_17-over.gif");
		index_39_over = newImage("images/index_39-over.gif");
		index_36_over = newImage("images/index_36-over.gif");
		index_54_over = newImage("images/index_54-over.gif");
		index_56_over = newImage("images/index_56-over.gif");
		index_57_over = newImage("images/index_57-over.gif");
		index_59_over = newImage("images/index_59-over.gif");
		index_61_over = newImage("images/index_61-over.gif");
		index_63_over = newImage("images/index_63-over.gif");
		index_65_over = newImage("images/index_65-over.gif");
		index_67_over = newImage("images/index_67-over.gif");
		index_42_over = newImage("images/index_42-over.gif");
		index_43_over = newImage("images/index_43-over.gif");
		index_44_over = newImage("images/index_44-over.gif");
		index_45_over = newImage("images/index_45-over.gif");
		index_46_over = newImage("images/index_46-over.gif");		
		index_47_over = newImage("images/index_47-over.gif");
		index_48_over = newImage("images/index_48-over.gif");
		index_49_over = newImage("images/index_49-over.gif");
		preloadFlag = true;
	}
}