I am building a dynamic form/div which has a clone button on the right bottom corner. Once you click it, it should clone the .item:first and then auto scroll down so the last div will hide. and when you click on prev or next button, it should scroll to the exact div that i want. my approach by using jQuery scrollTop with fixed px but it is not effective. since we have a lot of screen size. How can I achieve this? this is the first time i want to try Greensock to make this happen. Thanks