<!-- 测量肥廋的方法 -->
function standard_weight(form)
{
    var result = "";
	var res = form.body_height.value;
	if(res == "")
	{
		alert("请输入身高!") ;
		form.body_height.focus();
		return "";
	}
	if(isNaN(res))
	{
		alert("身高应是数字！");
		form.body_height.value = "";
		form.body_height.focus();
		return "";
	}
	if(res < 145 || res > 186){
		alert("抱歉，您的身高未在测试范围[145cm-186cm]！");
		form.body_height.value = "";
		form.body_height.focus();
		return "";
	}

	var arrayH = new Array(145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179, 181, 183, 185, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186);
	var arrayW = new Array("41.5-51.0", "43.0-52.0", "44.0-53.5", "45.0-55.0", "46.5-57.0", "47.5-58.0", "49.0-59.5", "50.0-61.0", "51.5-62.5", "53.0-64.5", "54.0-66.0", "55.0-67.5", "56.5-69.0", "58.0-71.0", "59.0-72.5", "60.5-74.0", "62.0-76.0", "63.5-77.5", "65.0-79.5", "66.0-81.0", "68.0-83.0", "42.0-51.5", "43.5-53.0", "44.5-54.5", "46.0-56.0", "47.0-57.5", "48.0-59.0", "49.5-60.5", "50.5-62.0", "52.0-63.5", "53.5-65.0", "54.5-66.5", "56.0-68.5", "57.0-70.0", "58.5-71.5", "60.0-73.5", "61.5-75.0", "62.5-76.5", "64.0-78.5", "65.5-80.0", "67.0-82.0", "68.5-84.0");
	for (var i=0; i<arrayH.length; i++)
	{
		if (res == arrayH[i])
		{
			result = "  "+"您的身高是"+res+"(公分)；理想体重范围"+arrayW[i]+"(公斤)";
			result += "\n  注:此测试只适用于成年女性!";
		}
	}	

	alert(result);
	form.body_height.focus();
}



<!-- 测量三围的方法 -->
function formatFloat(src, pos){	
	return Math.round(src*Math.pow(10, pos))/Math.pow(10, pos);
}

function standard_3w(form){
	var height = parseFloat(form.height_3w.value);
	var result = "";
	if(form.height_3w.value == "")
	{
		alert("请输入身高!") ;
		form.height_3w.focus();
		return "";
	}
	if(isNaN(height))
	{
		alert("身高应是数字！");
		form.height_3w.value = "";
		form.height_3w.focus();
		return "";
	}
	if(height < 140 || height > 190)
	{
		alert("抱歉，您的输入有误，请尝试重新输入！\n            身高：140～190cm");
		form.height_3w.value = "";
		form.height_3w.focus();
		return "";
	}
			
	var res1 = formatFloat(height/2.53*1.36,2);
	var res2 = formatFloat(height/2.53*0.96,2);
	var res3 = formatFloat(height/2.53*1.38,2);
	var res4 = formatFloat(height/2.53*0.81,2);
	
	result += "您的身高是： " + height + "cm  \n";
	result += "标准胸围是： " + res1 + "cm  \n";
	result += "标准腰围是： " + res2 + "cm  \n";
	result += "标准臀围是： " + res3 + "cm  \n";
	result += "标准腿围是： " + res4 + "cm  \n";
	alert(result);
	form.height_3w.focus();
}


<!--
var Weight;
var Ht;
function Calc(form){
var difference;
difference = (Weight)  / ((Ht) * (Ht))*10000;
form.zs.value = difference;
if (difference <15) {form.jy.value='你太瘦，应去做个体检，增加营养';}
if (difference >=15 && difference < 18) {form.jy.value='你过度苗条，应增加营养和锻炼';}
if (difference >=18 && difference < 22) {form.jy.value='恭喜！你是标准身材,注意保持';}
if (difference >=22 && difference < 25) {form.jy.value='你不苗条了，应该认真看看本网页';}
if (difference >=25 && difference < 30) {form.jy.value='你胖了，请看完本网页后立即减肥';}
if (difference >=30 && difference < 40) {form.jy.value='你很胖，减肥已是你的头等大事';}
if (difference >=40 && difference < 900) {form.jy.value='你非常胖，你应请医生帮助减肥';}
if (difference >=900) {form.jy.value='你不会比青蛙矮,身高单位是(厘米)';}
}
function SetWeight(weight){Weight = weight.value;}
function SetHt(ht){Ht = ht.value;}
function ClearForm(form){
form.Weight.value = '';
form.Ht.value = '';
form.Fdiff.value = '';
form.meaning.value = '';}
// -->

<!--
var Weight;
var Ht;
function Calc(form){
var difference;
difference = (Weight)  / ((Ht) * (Ht))*10000;
form.zs.value = difference;
if (difference <15) {form.jy.value='你太瘦，应去做个体检，增加营养';}
if (difference >=15 && difference < 18) {form.jy.value='你过度苗条，应增加营养和锻炼';}
if (difference >=18 && difference < 22) {form.jy.value='恭喜！你是标准身材,注意保持';}
if (difference >=22 && difference < 25) {form.jy.value='你不苗条了，应该认真看看本网页';}
if (difference >=25 && difference < 30) {form.jy.value='你胖了，请看完本网页后立即减肥';}
if (difference >=30 && difference < 40) {form.jy.value='你很胖，减肥已是你的头等大事';}
if (difference >=40 && difference < 900) {form.jy.value='你非常胖，你应请医生帮助减肥';}
if (difference >=900) {form.jy.value='你不会比青蛙矮,身高单位是(厘米)';}
}
function SetWeight(weight){Weight = weight.value;}
function SetHt(ht){Ht = ht.value;}
function ClearForm(form){
form.Weight.value = '';
form.Ht.value = '';
form.Fdiff.value = '';
form.meaning.value = '';}
// -->