var name                    = "#sidebar";
var sidebar_top_limit       = 0;
var sidebar_top_margin      = -275;
var sidebar_slide_duration  = 500;
var sidebar_max_travel		= 1400;


$(window).scroll(function() {

offset = $(document).scrollTop() + sidebar_top_margin;

	if(offset > sidebar_max_travel)
	offset = sidebar_max_travel;
	 
	if(offset < sidebar_top_limit)
	 offset = sidebar_top_limit;
	 
	$(name).animate({top:offset},{duration:sidebar_slide_duration,queue:false});
	
});


/*var name                    = "#sidebar";
var sidebar_top_limit       = 0;
var sidebar_top_margin      = -275;
var sidebar_slide_duration  = 500;


$(window).scroll(function() {
 
	offset = $(document).scrollTop() + sidebar_top_margin;
	 
	if(offset < sidebar_top_limit)
	    offset = sidebar_top_limit;
	 
	$(name).animate({top:offset},{duration:sidebar_slide_duration,queue:false});
	
});*/