Scripting Error and Problem

Faced scripting error in page05_layer02 as after I drag the bulldozer into the dash line, the video plays. After the video is finished playing, user clicks on drag section to quit the video. However, there was an error showing that the video cannot be invisible. I was not able to remove the video clip and cannot click to quit the video. Also, I received error [1026: Constructor functions must be instance methods.] 
Google searched for the solution and realised that the instance name of the video cannot be the same as the name of class. I spent quite a long time in figuring out how to solve that problem for this page.