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<script language="javascript">
function check()
{
temp=document.form1.test.value;
result=temp.split("-");
if(result.length!=2)
{
alert("input is wrong");
return false;
}
if(isNaN(result[0]))
{
alert("input is wrong");
return false;
}
if(isNaN(result[1]))
{
alert("input is wrong");
return false;
}
return true;
}
</script>
</head>
<body>
<form id="form1" name="form1" method="post" action="http://www.baidu.com" onsubmit="return check();">
<input type="text" name="test" />
<input type="submit" name="Submit" value="提交" />
</form>
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