var Weight;
var Ht;
function Calc(form){
var difference;
difference = (Weight)/ ((Ht) * (Ht))*10000;
form.zs.value = difference;
if (difference <15) {form.jy.value="您太瘦，应去做个体检，增加营养。";}
if (difference >=15 && difference < 18.5) {form.jy.value="您过度苗条，应增加营养和锻炼。";}
if (difference >=18.5 && difference < 22) {form.jy.value="恭喜！！您是标准身材,注意保持。";}
if (difference >=22 && difference < 25) {form.jy.value="您是健康体重,但已不苗条，小心。";}
if (difference >=25 && difference < 30) {form.jy.value="您超重了，应该立即减肥！";}
if (difference >=30 && difference < 40) {form.jy.value="您很胖，减肥已是您的头等大事！";}
if (difference >=40 && difference < 900) {form.jy.value="您非常胖，肥胖将危及您的健康！";}
if (difference >=900) {form.jy.value="您不会比青蛙矮,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 = "";}
function doPrint()
		{
			var pwin=window.open("","print");
			var printStr=window.document.getElementById("div_Print").innerHTML;
			pwin.document.body.innerHTML=printStr;
			pwin.print();
			pwin.close();
		}