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    if(event.keyCode==13) 
    { 
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function document.onkeydown() 

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    { 
        if(document.activeElement.id == "Text1")
        {
            document.form1.all.Button1.click();    //ÕâÀïµÄsubmitÊÇ°´Å¥µÄID
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        else if(document.activeElement.id == "Text2")
        {
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        }
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}
</script>
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