I have IE BHO plugin, written in C++.
1. Or fix all this bugs and make this work. (need work on IE 6/7/8/9/10/11)
2. Or rewrite this IE plugin in Delphi (only need injection from our BHO)
It's not a simple execution JS. Need some features:
after "head" loaded, before page show to user, need set style none (display:none). After that wait DomContentLoaded (DocumentComplete), insert(or inject) our code in page and after that set style to "display:inline".
To undestand this and check technology, we can send you our complete C++ IE BHO plugin (with bugs) and you can re-write only injection to Delphi or fix this bugs in this C++ IE BHO plugin.