AJAX Error to Fix

My site employed unlimited page scroll using ajax. There are multiple items on page. Logged in user can press the collect button and it changes the icon and if clicked again it removes from collect. It happens with ajax property and the link does lead to any new window. But when user scrolls down and goes the level which is equal to next page, and if the user clicks the same like/collect button it opens another window and ajax is lost for that link. This needs fixing.