HTML list of 28 items and AJAX page transition problem

HTML list of 28 items and AJAX page transition problem

I have a list of about 28 itmes with auto dividers.  The list loads perfects, and I can then click on each list item, and have it load a new page, with phone number and email items...All the pages were copied from an original working page, with nice transitions...the problem is, as I am testing, I have found a bug.

If I load all items in order going down the page consecutively, about half way down the page, when I hit the back button to go back to the list...animations just stop working, only when navigateing back to the list...to make matters worse, it dosen't always happen in the same spot...its like its a memory issue...has anyone seen this before with a list?  Can you provide any advice?