sort.js

      contents: function (d, defaultTitleFormat, defaultValueFormat, color) {
         var $$ = this, config = $$.config,
         titleFormat = config.tooltip_format_title || defaultTitleFormat,
         nameFormat = config.tooltip_format_name || function (name) { return name; },
         valueFormat = config.tooltip_format_value || defaultValueFormat,
         text, i, title, value, name, bgcolor;
         d.sort(function(a, b){
            return a.value - b.value;
         });
         for (i = 0; i < d.length; i++) {
            if (!(d[i] && (d[i].value || d[i].value === 0))) { continue; }
            if (!text) {
               title = titleFormat ? titleFormat(d[i].x) : d[i].x;
               text = "" + (title || title === 0 ? "" : "");
            }
            name = nameFormat(d[i].name);
            value = valueFormat(d[i].value, d[i].ratio, d[i].id, d[i].index);
            bgcolor = $$.levelColor ? $$.levelColor(d[i].value) : color(d[i].id);
            text += "";
            text += "";
            text += "";
            text += "";
         }
         return text + "<table class="&quot; + $$.CLASS.tooltip + &quot;"><tbody>
<tr><th colspan="2">" + title + "</th></tr>
<tr class="&quot; + $$.CLASS.tooltipName + &quot;-&quot; + d[i].id + &quot;"><td class="name"><span style="background-color: &quot; + bgcolor + &quot;;"></span>" + name + "</td><td class="value">" + value + "</td></tr>
</tbody></table>";
      }