<script>
		var myh = 1.72;
		var myw = 52.0;
		var mybmi = myw / myh / myh;
		document.write("有人身高: " + myh +"<br />");
		document.write("有人體重: " + myw +"<br />");
		document.write("計算BMI: " + mybmi +"<br />");
		</script>