http://imanas.shanghai.nyu.edu/~cec717/Week4_inclass_Example/Ex2_ScrollFun/index.html
I struggled with not putting the proper set of functions within the same bracket as the corresponding variable for ypos. Once I put the correct set of functions under the right place, the words appeared. I also could not get the images to show up on my browser but it was because I had the html and javascript file saved under the wrong folder. But after these two changes, my link worked!