PennController for IBEX › Forums › Support › html layout/event times/selector vs. scale/ compatibility › Reply To: html layout/event times/selector vs. scale/ compatibility
![](https://www.pcibex.net/wp-content/uploads/2018/10/IMG_8365-e1540835663655-150x150.jpg)
Hi,
1) I have seen people use an image of a cross, eg:
newImage("cross.png").print("center at 50vw","middle at 50vh")
,
newTimer(200).start().wait()
,
getImage("cross.png").remove()
2) Use the Selector element to make elements clickable on the page. If you want to catch any click anywhere on the page, you could print an empty Canvas of 100vw*100vh at (50vw,50vh) and add that Canvas to a Selector (make sure to delete the Canvas elements when you’re done listening to those clicks)
The MouseTracker tracks the cursor’s movements, it does not make elements on the page clickable. If you have a Scale element and want to have a historic of choices, pass "all"
to the .log
command
As I said above, PennController is an IBEX controller just like DashedSentence, it doesn’t matter whether you run it on the PCIbex Farm or on a dedicated server
Jeremy