-if ($this->extra_columns)
-foreach ($this->extra_columns as $column) {
-//$this->all_headers[$column['header']]=array('header'=>$column['header'],'type'=>$column['type'],'tagname'=>$column['tagname'],'title'=>$column['title'], 'description'=>$column['title'], 'label'=>$column['header'], 'fetched'=>$column['fetched'],'visible'=>false);
-$tmp_headers[$column['header']]=array('header'=>$column['header'],'type'=>$column['type'],'tagname'=>$column['tagname'],'title'=>$column['title'], 'description'=>$column['title'], 'label'=>$column['header'], 'fetched'=>$column['fetched'], 'visible'=>false, 'source'=>$column['source']);
-