Thanks for your patience.
While testing, we saw that selecting a category calls the following Javascript that is included on the page:
<!--
function jumpmenu(target,obj,restore){
eval(target+".location='"+obj.options[obj.selectedIndex].value+"'");
obj.options[obj.selectedIndex].innerHTML="Odota hetki ...";
}
//-->The line: target+location is the Javascript method for changing the URL of the page. The script is called with target as "parent", which means that it will set the URL of the page loading the Frame.
Again, I don't know AdManager, but you'll need to search for the following string and update it to "window". So, change:
<select class="mainosmylly_required" name="category_choose" onchange="jumpmenu('parent',this)">To:
<select class="mainosmylly_required" name="category_choose" onchange="jumpmenu('window',this)">
That should fix the redirection issue that is breaking out of the Facebook Frame. Once you change that, if you still run into issues, please let us know. If it works, please explain how to recreate the JoomlaWatch issue and we'll gladly help resolve that as well.
Thanks,
Alex