jQuery Grid Plugin - jqGrid

With the formatting function <a href="' + getFile(cellValue) + '" class="list_d" >Link</a>' a valid link is created.

When clicked on this URL the TopUp windows appears and shows the Flash Movie.

Now I would like to show the URL with TopUp window when pressed on Enter:

"onEnter" : function( rowid ) { 
 var rowData = jQuery(this).getRowData(rowid);
 var filename= rowData['filename'];

 jQuery('a[href="'+ filename+ '"]').addClass('#list_d').attr('target', "_blank").click();

But the Topup window does not show.  Any suggestions/ideas are appreciated.