function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

	if (document.images) {
		Hm_over = newImage("img1/Hm-over.gif");
		Eml_over = newImage("img1/Eml-over.gif");
		Abt_over = newImage("img1/Abt-over.gif");
		Our_over = newImage("img1/Our-over.gif");
		Cont_over = newImage("img1/Cont-over.gif");
		Log_over = newImage("img1/Log-over.gif");
}