Use JavaScript to Create a Scrolling Grid - WebReference.com-:
"A problem often encountered in web design is condensing large tables of data into a standard 800x600 web page. If the table is too big, the user will need to scroll the browser window to see all of the data, which means that the surrounding text and any row or header columns cannot be seen."

http://www.webreference.com/programming/javascript/gr/column4/index.html