<form>
<input type="text" name="txtF001" onkeypress="if(event.keyCode == 13) b1.fireEvent('onClick')" size="20%" maxlength="16" >
<input type="button" id=b1 value="搜索"  name="B3" onClick="Search()">
</form>
<script language="javascript">
function Search()
{alert('search')}
</script>