다이나믹한 파일업로드 폼

<script language="javascript">
var AtthNum = 0;
function AppendAttachFile() {
   var AtthBox = "";
   var AtthOk = true;

    if(AtthNum >= 10)
       return;

    if(AtthNum > 0) {
       var file;
       AtthBox = "document.Attach.A" + (AtthNum - 1);
       AtthBox += ".value";
       file = eval(AtthBox);

        if(file.length <= 0)
           AtthOk = false;
   }

    if(AtthOk) {
       var Atth= "document.all.AtthBox" + (AtthNum);
       Atth += ".style.display = ";
       Atth += "(document.all.AtthBox" + (AtthNum);
       Atth += ".style.display == ''none'') ? '''' : ''none''";
       eval(Atth);
       AtthNum++;
   }
}
</script> <form Name="Attach" enctype="multipart/form-data" action="HIServlet" method="post">
<input type="button" value="파일추가" onClick="AppendAttachFile();">
<table border="0" cellspacing ="0" cellpadding ="0" style="width:100%">
 <tr>
   <td align="left"><input name="A0" type="FILE" style="display:none; width=385px;" id="AtthBox0"></td>
 </tr>
 <tr>
   <td align="left"><input name="A1" type="FILE" style="display:none; width=385px;" id="AtthBox1"></td>
 </tr>
 <tr>
   <td align="left"><input name="A2" type="FILE" style="display:none; width=385px;" id="AtthBox2"></td>
 </tr>
 <tr>
   <td align="left"><input name="A3" type="FILE" style="display:none; width=385px;" id="AtthBox3" ></td>
 </tr>
 <tr>
   <td align="left"><input name="A4" type="FILE" style="display:none; width=385px;" id="AtthBox4"></td>
 </tr>
 <tr>
   <td align="left"><input name="A5" type="FILE" style="display:none; width=385px;" id="AtthBox5"></td>
 </tr>
 <tr>
   <td align="left"><input name="A6" type="FILE" style="display:none; width=385px;" id="AtthBox6"></td>
 </tr>
 <tr>
   <td align="left"><input name="A7" type="FILE" style="display:none; width=385px;" id="AtthBox7"></td>
 </tr>
 <tr>
   <td align="left"><input name="A8" type="FILE" style="display:none; width=385px;" id="AtthBox8"></td>
 </tr>
 <tr>
   <td align="left"><input name="A9" type="FILE" style="display:none; width=385px;" id="AtthBox9"></td>
 </tr>
</table>
</form>