<tr>
     <td colspan="2">
       <INPUT NAME="img" TYPE="image" SRC="[img]" width=600 height=600 border=0>
     </td>
   </tr>

With the applet (bold face text):

   <tr>
     <td colspan="2">
       <applet 
             codebase="/java/jBox"
             archive="jBox.jar"
             code="jBox.class"
             width="600"
             height="600" 
             name="jBox" 
           MAYSCRIPT>
         <param name="image" value="http://[host][img]">
       </applet>
     </td>
   </tr>