Increase/decrease bar in Gantt chart with help of script trigger

I made a solution to increase and decrease a bar in a chart with drag and drop. It can also be used as a slider object. It also shows a technique to drag and drop between records in list view.

Todd Geist made a challenge on his podcast to make a bar that you could drag to move and to expand and I took the challenge.

If you have any ideas how to improve it please write a comment.

BTW, please check out Todds nice solution to use conditional formatting and make simple bars.

You find the drag and drop solution here.

http://filemakerbloggen.se/post/Drag-and-drop-for-Gantt.aspx