PHP Enter on Text not submit button

<script type="text/javascript">

    function sendForm() {

        //alert ("sending data");

        getSave(document.formSave.DEP.value,document.formSave.barcode.value); จะให้มันส่งข้อมูลไปไหน

    }

</script>

<form name="formSave" action="javascript&#058;sendForm()">

    <TR>

         <TD align='right' calss='bg1'>ฝ่าย:&nbsp;&nbsp;</TD>

         <TD align='left' class='default'><!--%DEP_CODE%--></TD>

    </TR>

    <TR>

        <TD align='right' calss='bg1'>BarCode:&nbsp;&nbsp;</TD>

        <TD align='left' class='default'><input name="barcode" type="text"  size="20"></TD>

    </TR>

    <TR>

    <input type="button" value="-SAVE-" onclick=" onclick="sendForm()"></form>

</form>