function show_forex() {
	document.write("<table width='174' class='box' align='center'>");
	for (i = 0; i < vForexs.length; i++) {
		if (vForexs[i] != "") {
			document.write("<tr><td width='50%'>" + vForexs[i] + "</td><td>" + vCosts[i] + "</td></tr>");
		}
	}
	document.write("</table>");
}
function show_gold() {
	document.write("<table width='174' class='box' align='center'>");
	document.write("<tr><td>Loại vàng</td><td>Mua</td><td>Bán</td></tr>");
	document.write("<tr><td>SBJ</td><td>" + vGoldSbjBuy + "</td><td>" + vGoldSbjSell + "</td></tr>");
	document.write("<tr><td>SJC</td><td>" + vGoldSjcBuy + "</td><td>" + vGoldSjcSell + "</td></tr>");
		
	document.write("</table>");
}