listWidth String|Number
(default: "30%")
The width of the task list. Numeric values are treated as pixels.
Example
<div id="gantt"></div>
<script>
$("#gantt").kendoGantt({
dataSource: [{
id: 1,
orderId: 0,
parentId: null,
title: "Task1",
start: new Date("2014/6/17 9:00"),
end: new Date("2014/6/17 11:00")
}],
listWidth: 400
});
</script>