var w, s;

window.addEvent('domready', function()
{
	w = $('wrap').getSize().y;
	s = $('sidebar-content').getSize().y;
});

window.addEvent('scroll', function()
{
	if(Window.getScrollTop() > 2480)
	$('sidebar-content').setStyle('top', (Window.getScrollTop())+'px'); 
});