用图片提交时.....今天三颗Δ真好

Question

<script language="javascript">function setfocus(){
window.form1.fname.focus();
window.resizeTo(screen.availWidth,screen.availHeight);
window.moveTo(0,0)
}function ch()
{
if(form1.fname.value==""){
alert("请输入用户名！");
form1.fname.focus();
return (false);
}
if(form1.fpassword.value==""){
alert("你忘了输入密码！");
return (false);
}
form1.submit();
}
</script>
<form name="form1" method="post" action="userlogin.asp">
 <input type="text" name="fname" size="14" class="text">
<input type="password" name="fpassword" size="14" class="text">
</form>
<img src="images/login1_12.gif" width=37 height=38 usemap="#Map" border="0">
<map name="Map"> 
  <area shape="circle" coords="18,20,13" href="javascript:void(0)" onclick="ch();" onfocus="this.blur();">
</map>

Answer 1

<script language="javascript">function setfocus(){
window.form1.fname.focus();
window.resizeTo(screen.availWidth,screen.availHeight);
window.moveTo(0,0)
}function ch()
{
if(form1.fname.value==""){
alert("请输入用户名！");
form1.fname.focus();
return (false);
}
if(form1.fpassword.value==""){
alert("你忘了输入密码！");
return (false);
}
form1.submit();
}
</script>
<form name="form1" method="post" action="userlogin.asp">
 <input type="text" name="fname" size="14" class="text">
<input type="password" name="fpassword" size="14" class="text">
</form>
<img src="images/login1_12.gif" width=37 height=38 usemap="#Map" border="0" onClick="return ch()">

Answer 2

void(0)是什么意思？ 用户名和密码输入完还是不能提交页面？

Answer 3

hazeline(砸死我)解决了
谢谢，散分！