Tests basic mouse event handlers.
The test shows a target that can be used to generate the various kinds of mouse events supported in SVG. Below the target, the list of events is shown with red markers next to each.
If the test passes, all the markers should have turned to green after the events have been triggered on the target. If any event has not triggered, its marker will remain red.
Load the test. Click on the gray circle.
The test passes if, after clicking the gray circle, the three rectangles are green.