// JavaScript Document
function ClearForm(form){
form.weight.value = "";
form.height.value = "";
form.bmi.value = "";
form.my_comment.value = "";
}
function bmi(weight, height, sex) {
	if(sex == '0'){
		bmindx = height - 105;
	}else{
		bmindx = height - 110;
	}
return bmindx;
}
function checkform(form) {
if (form.weight.value==null||form.weight.value.length==0 
|| form.height.value==null||form.height.value.length==0){
form.my_comment.value = "哈哈！您的输入好像不正确哦！";
 return false;
 }
else if (parseFloat(form.height.value) <= 0||
parseFloat(form.height.value) >=500||
parseFloat(form.weight.value) <= 0||
parseFloat(form.weight.value) >=500){
ClearForm(form);
form.my_comment.value = "你输的数字我头都大了,快改正一下，再测试一遍……";
return false;
 }
 return true;
}


function computeform(form) {
if (checkform(form)) {
	var sex;
	var e = document.getElementsByName("sex");
       
        for(var i=0;i<e.length;i++){ 
        if(e[i].checked) 
              sex=e[i].value; 
        }
weight = form.weight.value;
yourbmi=Math.round(bmi(form.weight.value, form.height.value, sex));
form.bmi.value=yourbmi;
//weight - 40 > yourbmi; 
yourbmi = weight - yourbmi;
form.myheight.value = weight + 105;
if(sex == '0'){
	form.myheight.value = parseInt(weight) + 105;
	if (yourbmi >30) {
		form.my_comment.value="别开玩笑了，我敢断定这绝对不是你的身材，是你家母猪的吧！";
	}else if (yourbmi >20 && yourbmi <=30) {
		form.my_comment.value="还没处对象吧？赶快减肥！送你六字真言：先减肥，穿高秀。";
	}else if (yourbmi >10 && yourbmi <=20) {
		form.my_comment.value="你这个身材比例真的要高秀增高鞋帮你一把！";
	}else if (yourbmi > 2 && yourbmi <= 10) {
		form.my_comment.value="胖一点是福，穿上高秀增高鞋，你将显得更匀称";
	}else if (yourbmi >= -5 && yourbmi <= 2) {
		form.my_comment.value="你的身材刚刚好，穿上高秀增高鞋吧！你会更自信喽";
	}else if (yourbmi >= -15 && yourbmi < -5) {
		form.my_comment.value="偏瘦哦，加紧多吃点营养的食物和穿上高秀增高鞋。";
	}else if (yourbmi >= -30 && yourbmi <= -15) {
		form.my_comment.value="你不能再天天喝西北风了，小心芦柴棒变芦柴干。";
	}else if (yourbmi < -30) {
 		form.my_comment.value="按照生物学来说这种生物是不能生存的。你当真不是来自火星？";
  	}
  
}else{
	form.myheight.value = parseInt(weight) + 110;
	if (yourbmi >25) {
		form.my_comment.value="别开玩笑了，我敢断定这绝对不是你的身材，是你家母猪的吧！";
	}else if (yourbmi >15 && yourbmi <=25) {
		form.my_comment.value="还没处对象吧？赶快减肥！送你六字真言：先减肥，穿高秀。";
	 }else if (yourbmi >5 && yourbmi <=15) {
		form.my_comment.value="你这个身材比例真的要高秀增高鞋帮你一把！";
	}else if (yourbmi > -3 && yourbmi <= 5) {
		form.my_comment.value="胖一点是福，穿上高秀增高鞋，你将显得更匀称";
	}else if (yourbmi >= -8 && yourbmi <= -3) {
		form.my_comment.value="你的身材刚刚好，穿上高秀增高鞋吧！你会更自信你喽";
	}else if (yourbmi >= -20 && yourbmi < -10) {
		form.my_comment.value="偏瘦哦，加紧多吃点营养的食物和穿上高秀增高鞋。";
	}else if (yourbmi >= -35 && yourbmi <= -20) {
 		form.my_comment.value="你不能再天天喝西北风了，小心芦柴棒变芦柴干。";
	}else if (yourbmi < -35) {
		form.my_comment.value="按照生物学来说这种生物是不能生存的。你当真不是来自火星？";
	}
  
}
}
  //alert(yourbmi);
return;

  }