Bugfix: broken decision has made the [+] button collapse entries

My logic error using jQuery.  Even an empty jQuery wrapped selection is 'true';
use either .is or .length when you want a boolean result.

plugins/Ajax/htdocs/images/common.js

@@ -668,7 +668,7 @@ function firehose_fix_up_down(id, new_state) {
 		$updown.setClass(new_state);
 
 		// When ad admin nixes something, it should collapse and get out of the way.
-		if ( fh_is_admin && (new_state=='voteddown' || $('#title-'+id+':contains("Comment:")')) )
+		if ( fh_is_admin && (new_state=='voteddown' || $('#title-'+id).is(':contains("Comment:")')) )
 			firehose_collapse_entry(id);
 	}
 }