Thanks. Me myself cannot find the path in the forest also, to many div's....
It has ben two years ago since I managed this altogether... should perform the error-test now.
Indeed, I could also find no mistake, but I took another library (instead of 1.11.1)?: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <script type="text/javascript" src="javascript/smoothscroll.js"></script> and put it down below.
And it helpt: it works, I shall remanage the site..