public function generateInner()
 {
     $num_rows = $this->getRowCount();
     $num_cols = $this->getColumnCount();
     if ($num_rows && $num_cols) {
         $table = new MSimpleTable($obj->name);
         $table->setAttribute('width', '100%');
         $table->setCell(0, 0, $this->top, "align=\"center\" colspan={$num_cols}");
         $table->setCell(1, 0, $this->left, "align=\"center\" valign=\"top\"");
         $table->setCell(1, 1, $this->center, "align=\"center\" valign=\"top\" width=\"100%\"");
         $table->setCell(1, 2, $this->right, "align=\"center\" valign=\"top\"");
         $table->setCell(2, 0, $this->bottom, "align=\"center\" colspan={$num_cols}");
         $this->inner = $table;
     }
 }