哪位大哥给我看下这个简单滴表单提交程序

缺了括号
if(document.form1.idNumber.value=="")
{alert("请填写身份证号码";return false;}
if(document.form1.Email.value=="")
{alert("请填写EMAIL";return false;}

<form action="http://www.test.com" method=post name="form1">
<input type="submit"value="提交">
-->
<input type="button" value="提交" onclick="return validator()">
呵呵，经常有人提这个问题呀！
如果是<input type="submit"value="提交">不论是否判断都会提交的，将submit改为button，楼上正确！
<html>
<head>
<title>编写JAVA脚本</title>
<script language="JavaScript">
function validator()
{
if(document.form1.name.value=="")
    {alert("请你填写姓名");return false;}
if(document.form1.idNumber.value=="")
    {alert("请填写身份证号码";return false;}
if(document.form1.Email.value=="")
    {alert("请填写EMAIL";return false;}
else
{var checkstr=document.form1.idNumber.value;
  for(var i=0;i<checkstr.length;i++)
  {var onechar=checkstr.substring(i,i+1)
  if(onechar<"0" || onechar>"9")
     {document.all.form1.idNumber.style.color="red";
return false;
}
  }
  form1.submit();
}
}
</script>
</head>
<body>
<form action="http://www.test.com" method=post name="form1" >
<h2>个人信息</h2>
<table>
<tr>
<td>请输入姓名</td>
<td><input name="name">
<tr>
<td>请输入身份证号
<td><input name="idNumber">
<tr>
<td>输入邮件地址
<td><input name="Email"></td>
</table>
<br>
<input type="button"value="提交" onclick="javascript:validator();">
<input type="reset">
</form></body>
</html>