自动焦点回车输入数据

<html>
<head>
<SCRIPT   LANGUAGE="JavaScript">
function   window_onload()
{
document.form1.T1.focus();
}
</SCRIPT>
<script language="javascript" for="document" event="onkeydown">

<!--

if(event.keyCode==13 && event.srcElement.type!='button' && event.srcElement.type!='submit' && event.srcElement.type!='reset' && event.srcElement.type!='textarea' && event.srcElement.type!='')

event.keyCode=9;

-->

</script>

</head>
<body onload="window_onload() ">
<form action="" method="get" name="form1">
<input name="T1" type="text">
<input name="T2" type="text">
<input name="T3" type="submit" value="提交">

</form>
</body></html>