Hello again
I ran into a lot of problems when I had to substitute references to JavaScript and image files with the placeholders used in DoubleClick.
This was not so much because I had to "flatten" the file structure, but rather because there was not only references to files in the main html page, but also within the JavaScript files. There seems to be no easy way around that, am I right?
Instead, I have started exploring another strategy. I have uploaded the html5 ad to our own web server, and created a third party creative, that direct towards our web server (which is "third party" in this context). So far it looks promising, but I would like to hear your opinion on this.
Thank you!