I'm not sure I understand. What I got looks a lot like the AJAX-example on W3Schools with a XML-file as the database, a JavaScript-file that prints the information from a PHP-file and just the plain HTML-file that loads the JavaScript.

What I first tried was using an iframe on my blogg that linked to the PHP-page (which has all the data I want) but it wouldn't allow it, just like my host. Then, since I could print HTML directly with JavaScript on the blogg, I tried printing some PHP-code but it didn't work. After that I tried loading the XML-file directly in JavaScript (too the file on my server with full URL) but that didn't work as well.

What I think I need is somehow load the content of a URL (my PHP-page) into JavaScript as plain HTML and just write it.