You can use DHTML and overlaying stuff. But you don't have to. I personally used some
Java image manipulation code. In each case all you need is obtainable via the API.
1.) You can get the process image.
2.) You can retrieve the active activities' names.
3.) For each activity you can retrieve the co-ordintes of its position in the process
image.
For this take a look at the API-documentation and there might be some good hints given by
other users of the forum in the thread I mentioned before.
I went for the solution to draw an additional coloured rectangle around the active
activities since I haven't had much Java image manipulation experience. Worked for me.
But if you are happy with DHTML stuff go for it and take a closer look at how the Console
handles this.
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