File Upload control in sharepoint designer

Normally SharePoint provides Document Attachment in the ribbon. But in my case ribbon was hide from the user. So I need to add Attachment Control on the form instead of ribbon. So I achieve it using Client Object Model. Insert the following code in your form to make attachment field available in the Form.

<tr>
     <td rowspan="2" width="190px" valign="top" height="50px">
        <H3>
             Upload Evidence
        </H3>
     </td>
     <td valign="bottom" height="15" id="attachmentsOnClient">
         <span dir="ltr">
             <input type="file" name="fileupload0" id="onetidIOFile" size="56" title="Name" /> 
         </span>
     </td>
</tr>
<tr>
      <td colspan="4">
           <input id="attachOKbutton" type="BUTTON" onclick='OkAttach()' value="Upload" style="width: 12.8em; height: 2em"/>
           <span id="idSpace"/>
        </td>
</tr>