怎么样可以点击电子邮件根据学生的邮件地址调出一个邮件收发器

帮看下下面的代码，当点到表单里面的学生名字，然后点击电子邮件根据学生的邮件地址调出一个邮件收发器该怎么改？
请高手帮小弟看下～～～
<html>
<head>
<title>学生成绩输入系统</title>
<script language = "javascript">
<!--
  var emails= new Object();
emails["001"]="[email protected]"
emails["002"]="[email protected]"
emails["003"]="[email protected]"
emails["004"]="[email protected]"
emails["005"]="[email protected]"
emails["006"]="[email protected]"
emails["007"]="[email protected]"
emails["008"]="[email protected]"
emails["009"]="[email protected]"
emails["010"]="[email protected]"
var errMsg=" ";
  
function doSelect(){
var selected=document.mainForm.nameList.selectedIndex;
var selectedValue=document.mainForm.nameList.options[selected].value;
var selectedText=document.mainForm.nameList.options[selected].text;
document.images["studentImage"].src = selectedValue +".gif";
document.links[0].href  = "emailto:"+emails[selectedValue];
document.title="学生成绩输入系统 - "+selectedText
}
function clearAll(){
document.mainForm.nameList.selectedIndex=-1;
document.mainForm.wangye.value="";
document.mainForm.math.value="";
document.mainForm.VB.value="";
document.mainForm.PS.value="";
document.mainForm.JAVA.value="";
document.mainForm.gym.value="";
}
function checkRequired(form,name,label) {
if(form[name].value=="")
  errMsg+='请输入"'+label+"'\n";
}
function isScore(s){
for(var i=0;i<s.length;i++){
var c=s.charAt(i);
if(((c<"0")||(c>"9")))return false;
}
if(parseInt(s)>100) return false;
return true;
}
function checkScore(form,name,label) {
if(form[name].value.length>0 && !isScore(form[name].value))
errMsg +='输入"'+label+"'无效\n";
}
function checkGym() {
var gymScore = document.mainForm["gym"].value;
var isValidString = true;
if(gymScore.length>0){
if(gymScore.length!=1)isValidString = false;
var validChars = "abcdef";
var c=gymScore.toLowerCase();
if(validChars.indexOf(c)==-1)
isValidString = false;
}
if(!isValidString)
errMsg+='输入"体育"无效\n';
}
function doSubmit() {
var form = document.mainForm;
checkRequired(form,"nameList","学生姓名");
checkRequired(form,"wangye","网页");
checkScore(form,"wangye","网页");
checkRequired(form,"math","数学");
checkScore(form,"math","数学");
checkRequired(form,"VB","V B");
checkScore(form,"VB","V B");
checkRequired(form,"PS","P S");
checkScore(form,"PS","P S");
checkRequired(form,"JAVA","JAVA Script");
checkScore(form,"JAVA","JAVA Script");
checkRequired(form,"gym","体育");
checkGym();
if(errMsg.length>0){
alert(errMsg);
errMsg=" "
return false;
}
else
document.mainForm.submit();}
//-->
</script>
</head>
<body onload="clearAll();" background="无标题.bmp" style="background-attachment: fixed">
<p align="left">
<b>学生成绩输入系统</b>
<form name="mainForm">
<table style="font-size:14px;">
<tr><td colspan="2">学生名单</td></tr>
<tr>
<td>
<select name="nameList" size="12" style="width:100px" onchange="doSelect();">
<option value="001">赖斌</option>
<option value="002">蒋鑫</option>
<option value="003">李金荣</option>
<option value="004">郑炳基</option>
  <option value="005">李灿彬</option>
  <option value="006">龙伟森</option>
  <option value="007">周健</option>
  <option value="008">黎嘉怡</option>
  <option value="009">刘茜琦</option>
  <option value="010">罗丹妮</option>
</select>
</td>
<td>
<img src="blank.gif" name="studentImage" width="120" height="160">
</td>
</tr>
<tr>
<td>联系方式</td>
<td><a href="mailto:" name="email">电子邮件</a></td>
</tr>
<tr>
<td>网页:</td>
<td><input type="text" name="wangye"></td>
</tr>
<tr>
<td>数学:</td>
<td><input type="text" name="math"></td>
</tr>
<tr>
<td>V B:</td>
<td><input type="text" name="VB"></td>
</tr>
<tr>
<td>P S:</td>
<td><input type="text" name="PS"></td>
</tr>
<td>JAVA Script:</td>
<td><input type="text" name="JAVA"></td>
</tr><tr>
<td>体育</td>
<td><input type="text" name="gym"></td>
</tr>
<tr>
<td><input type="submit"value=" 提 交 "onclick="doSubmit();" style="float: left"></td>
<td>&nbsp</td>
</tr>
</table>
</form>
</body>
</html>