I decided to create this thread to post some tips or part of the source code, that can be usefull for the others. There is no place for the posts about your problems. When you have some, consider to make independent thread.
So for the beginning:
Some of you are modifying the web with the WYSWYG editors, what is not a best choice, because they usually add to the source code unwanted parts. So it is better to do your web with some text editor. Yes, everybody can use the Notepad, but my recommendation is the PSPad editor. It is freeware, so you dont need to pay anything and it has a lot of very usefull functions. It is also allocated to many languages. It can be downloaded here:
http://www.pspad.com/