/////////////////////////////////////////////////////////////////////////////
// on scroll Event --
//
//   When the page is scrolled, keep the SU controller in the middle of the 
//   page.
//

Event.observe(window, 'scroll', function onLoadHandler() {
    var o=$('water');
    o.style.top=(window.pageYOffset+(window.innerHeight))-(o.offsetHeight)+'px';
});

Event.observe(window, 'resize', function onLoadHandler() {
    var o=$('water');
    o.style.top=(window.pageYOffset+(window.innerHeight))-(o.offsetHeight)+'px';
});