What do you have to upload to embed a flash game?

Hi, I have just finished a simple unity game and I would like to try the new flash export. However, it gives me four files, and I want to upload the game to a website. I have tried simply uploading the .swf but there is a red box on the top left corner that says “Fatal Error : null”. The html file works fine in my computer, but I don’t know what to do in a browser(I use Safari). I have heard that I must set the wmode=direct, but I don’t know how to do this.
Thanks in advance.

When you upload the swf for usage in a site, that site needs to use a SWF embed tag with wmode direct. The test html that we provide when we make a build shows you how to do this.