How can I make a div element move up and down the page when the user is scrolling the page? (where that element is always visible)
                +3 
                A: 
                
                
              You want to apply the fixed property to the position style of the element
position:fixed;
What browser are you working with? Not all browsers support the fixed property. Read more about who supports it, who doesn't and some work around here
http://webreflection.blogspot.com/2009/09/css-position-fixed-solution.html
                  Bob
                   2009-10-28 17:47:01
                
              Beware that position:fixed is not working in IE6 and smaller
                  Residuum
                   2009-10-28 17:49:14
                STOP SUPPORTING IE6
                  Jason
                   2009-10-28 17:51:03
                @Jason, as much as I whole-heartedly agree with the sentiment, in the Corporate environment it may not be an option. Some companies can't/won't upgrade for a variety of reasons (like being held technologically hostage by a vendor... another story for another time). If s/he needs to support it then s/he needs to support it.
                  AnonJr
                   2009-10-28 21:09:37
                
                +1 
                A: 
                
                
              
            You might want to check out Remy Sharp's recent article on fixed floating elements at jQuery for Designers, which has a nice video and writeup on how to apply this effect in client script
                  Russ Cam
                   2009-10-28 21:01:21