This JavaScript can implement an iframe in your web page capable of displaying contents drawn from a different html file. The contents can also be rotated and supplied to the script. This will reduce the size of your web page to a great extent and also enable to display more in your web page in a small space. The scrolling content can be edited by editing the html file from which the content to the iframe is supplied. You can customize the frame width, height, margin width, margin height, frame border etc.