Drop down menu does not work

the hot corporate template is installed and the content of our old club-website has been imported.

But we have trouble with the menu-settings. We would like the menu as here:
[url=http://http://demo.hotjoomlatemplates.com/index.php?template=corporate]Demo-site[/url]

Here is a screenshots - what is wrong?

Thanks for your help!!

Can we see site live?

i replied to moderator

Open:

templates/hot_corporate/js/jquery.hjt.accmenu.js

this like:

(function(jQuery, undefined) {

change to:

jGuery(function(){


and this line(last):

})(jQuery);

to:

});

sorry - but this change makes no different!

One thing is that made type it is:

jQuery(function(){

not

jGuery(function(){