if(checked_checkboxes.length>0){

                            var rev_end = checked_checkboxes[0].name;

                            var rev_start = checked_checkboxes[checked_checkboxes.length-1].name;

                            var url = url_tmpl.replace('__REVRANGE__',

                                    rev_start+'...'+rev_end);

                            var link = (rev_start == rev_end)

                                ? _TM['Show selected change __S']

                                : _TM['Show selected changes __S -> __E'];

                            link = link.replace('__S',rev_start.substr(0,6));

                            link = link.replace('__E',rev_end.substr(0,6));

                            YUD.get('rev_range_container').href = url;

                            YUD.get('rev_range_container').innerHTML = link;

                            YUD.setStyle('rev_range_container','display','');

                            YUD.setStyle('rev_range_clear','display','');

                            YUD.get('open_new_pr').href = pr_tmpl + '?rev_start={0}&rev_end={1}'.format(rev_start,rev_end);

                            YUD.setStyle('compare_fork','display','none');

                        }

                        else{

                            YUD.setStyle('rev_range_container','display','none');

                            YUD.setStyle('rev_range_clear','display','none');

                            YUD.setStyle('compare_fork','display','');

                        }

                    };

                    YUE.onDOMReady(checkbox_checker);

                    YUE.on(checkboxes,'click', checkbox_checker);

                    YUE.on('rev_range_clear','click',function(e){

                        for (var i=0; i<checkboxes.length; i++){

                            var cb = checkboxes[i];

                            cb.checked = false;

                        }

                        checkbox_checker();

                        YUE.preventDefault(e);

                    })

                    var msgs = YUQ('.message');

                    // get first element height

                    var el = YUQ('#graph_content .container')[0];

                    var row_h = el.clientHeight;

                    for(var i=0;i<msgs.length;i++){

                        var m = msgs[i];

                        var h = m.clientHeight;

                        var pad = YUD.getStyle(m,'padding');