2. $("#menu-247 > a, #menu-213 > a, #menu-214 > a, #menu-215 > a, #menu-216 > a, #menu-218 > a, #menu-219 > a").addClass("mainLevel");  
3.   /*$(".mainLevel").each(function (i) {
4.     $(this).before('<div id="' + $(this).parent().attr("id") + '-behind">&nbsp;</div>');
5.     $(this).prev().css({
6.       width: $(this).css("width"),
7.       height: $(this).css("height"),
8.       position: "absolute",
9.       top: "0",
10.       left: $(this).parent().css("left"),
11.       zIndex: "5",
12.       display: "none",
13.       backgroundColor: "blue"
14.     });
15.     $(this).css({
16.       position: "relative",
17.       zIndex: "10"
18.     });
19.   });*/
20.   
21.   $(".mainLevel").hover(function() {
22.     alert('test');
23.   });

And I receive the error "Uncaught TypeError: Cannot read property 'guid' of undefined" in Google Chrome.

I thought it had to do with the fact that the event handler was trying to be added before the DOM was modified.  But then I tried simply this:

2. $("#menu-247 > a, #menu-213 > a, #menu-214 > a, #menu-215 > a, #menu-216 > a, #menu-218 > a, #menu-219 > a").hover(function() {
3.     alert('test');
4.   });

And still received the error.  I removed all the "> a" so I simply had a list of ids and the error was still there.  Even when I only have one id listed, the error comes up!  It also seems to be any element.

But if I just try the alert part, everything works.

Any ideas?  Thanks!