plugin or other way to change cursor style

Hi,
I wonder if there is a plugin or another way to change the style of the cursor/mouse pointer.
I want to use this to show the user that the solution is busy.
For long running actions I already use the headless client and/or progress plugin.
But for actions that may take only one or a few seconds I want to change the cursor style and set it back when the action is ready.
I think I have seen it somewhere and today I discussed this with Marcel Trapman, he also thought there is something available somewhere.
But maybe I mix it up with Oracle Forms where I used to do it that way.
Regards,
I wonder if there is a plugin or another way to change the style of the cursor/mouse pointer.
I want to use this to show the user that the solution is busy.
For long running actions I already use the headless client and/or progress plugin.
But for actions that may take only one or a few seconds I want to change the cursor style and set it back when the action is ready.
I think I have seen it somewhere and today I discussed this with Marcel Trapman, he also thought there is something available somewhere.
But maybe I mix it up with Oracle Forms where I used to do it that way.
Regards,