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

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

var preloadFlag = false;
function preloadImages() {
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		chinese_over = newImage("images/chinese-over.gif");
		japanese_over = newImage("images/japanese-over.gif");
		korean_over = newImage("images/korean-over.gif");
		deutsche_over = newImage("images/deutsche-over.gif");
		espanol_over = newImage("images/espanol-over.gif");
		francais_over = newImage("images/francais-over.gif");
		italiano_over = newImage("images/italiano-over.gif");
		tmma_black_final_27_manufacturing_over = newImage("images/tmma_black_final_27-manufac.gif");
		tmma_black_final_27_technology_over = newImage("images/tmma_black_final_27-technol.gif");
		tmma_black_final_27_assembly_over = newImage("images/tmma_black_final_27-assembl.gif");
		tmma_black_final_27_materials_over = newImage("images/tmma_black_final_27-materia.gif");
		tmma_black_final_29_manufacturing_over = newImage("images/tmma_black_final_29-manufac.gif");
		tmma_black_final_29_ImageMap_06_over = newImage("images/tmma_black_final_29-ImageMa.gif");
		tmma_black_final_29_technology_over = newImage("images/tmma_black_final_29-technol.gif");
		tmma_black_final_29_materials_over = newImage("images/tmma_black_final_29-materia.gif");
		tmma_black_final_29_center_over = newImage("images/tmma_black_final_29-center_.gif");
		preloadFlag = true;
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}