I'm recoding one site (D7) where I stumbled upon statically added jquery (using a script tag inside html.tpl.php that pulls jquery library from google CDN). I installed "jQuery CDN" module that does the same and expected that when I loose statically added script tag everything would stay the same, but the menu and slider don't work (menu is implemented using some internal jsddmenu.js file, also slider using slides.jquery.js). What's the difference between those two implementations, when both of them add:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js" type="text/javascript"></script>
to the html code?