Small firefox table-td fix.

test/meshviewer_index.html

@@ -245,7 +245,7 @@ function machinchose() { return 'test machin '; }
 
 <table border="0" cellpadding="0" cellspacing="0">
     <tr>
-        <td>
+        <td height="1%">
             <div id="bouton">
                 <textarea autofocus id="id_txtarea_code_src" rows="6" cols="94" style="font: 14px Consolas; resize: none;"></textarea>
             </div>
@@ -257,7 +257,7 @@ function machinchose() { return 'test machin '; }
         </td>
     </tr>
     <tr>
-        <td>
+        <td height="1%">
             <div id="id_div_alphabet"></div>
         </td>
     </tr>