(function($){

	  var settings = {
	        speed: 350 //animation duration
	      , easing: "linear" //use easing plugin for more options
	      , padding: 10
	      , constrain: false
	    }
	    , $window = $(window)
	    , stickyboxes = []
	    , methods = {

	          init:function(opts){
	            settings = $.extend(settings,opts);
	            return this.each(function () {
	              var $this = $(this);
	              setPosition($this);
	              stickyboxes[stickyboxes.length] = $this;
	              moveIntoView();
	            });
	          }

	        , remove:function(){
	            return this.each(function () {
	              var sticky = this;
	              $.each(stickyboxes, function (i, $sb) {
	                if($sb.get(0) === sticky){
	                reset(null, $sb);
	                stickyboxes.splice(i, 1);
	                return false;
	                }
	              });
	            });
	          }

	        , destroy: function () {
	            $.each(stickyboxes, function (i, $sb) {
	              reset(null, $sb);
	            });
	            stickyboxes=[];
	            $window.unbind("scroll", moveIntoView);
	            $window.unbind("resize", reset);
	            return this;
	          }

	      };


	  var moveIntoView = function () {
	    $.each(stickyboxes, function (i, $sb) {
	      var $this = $sb
	        , data = $this.data("stickySB");
	      if (data) {
	        var sTop = $window.scrollTop() - data.offs.top
	          , currOffs = $this.offset()
	          , origTop = data.orig.offset.top - data.offs.top
	          , animTo = origTop;
	        //scrolled down out of view
	        if (origTop < sTop) {
	          if (sTop > data.offs.bottom) //stop inside parent
	            animTo = data.offs.bottom;
	          else animTo = sTop + settings.padding;
	        }
	        $this
	          .stop()
	          .animate(
	              {top: animTo}
	            , settings.speed
	            , settings.easing
	        );
	      }
	    });
	  }

	  var setPosition = function ($sb) {
	    if ($sb) {
	      var $this = $sb
	        , $parent = $this.parent()
	        , parentOffs = $parent.offset()
	        , currOff = $this.offset()
	        , data = $this.data("stickySB");
	      if (!data) {
	        data = {
	            offs: {} // our parents offset
	          , orig: { // cache for original css
	                top: $this.css("top")
	              , left: $this.css("left")
	              , position: $this.css("position")
	              , marginTop: $this.css("marginTop")
	              , marginLeft: $this.css("marginLeft")
	              , offset: $this.offset()
	            }
	        }
	      }
	      //go up the tree until we find an elem to position from
	      while (parentOffs && "top" in parentOffs
	        && $parent.css("position") == "static") {
	        $parent = $parent.parent();
	        parentOffs = $parent.offset();
	      }
	      if (parentOffs) { // found a postioned ancestor
	        var padBtm = parseInt($parent.css("paddingBottom"));
	        padBtm = isNaN(padBtm) ? 0 : padBtm;
	        data.offs = parentOffs;
	        data.offs.bottom = settings.constrain ?
	          Math.abs(($parent.innerHeight() - padBtm) - $this.outerHeight()) :
	          $(document).height();
	      }
	      else data.offs = { // went to far set to doc
	          top: 0
	        , left: 0
	        , bottom: $(document).height()
	      };
	      $this.css({
	          position: "absolute"
	        , top: Math.floor(currOff.top - data.offs.top) + "px"
	        , left: Math.floor(currOff.left - data.offs.left) + "px"
	        , margin: 0
	        , width: $this.width()
	      }).data("stickySB", data);
	    }
	  }

	  var reset = function (ev, $toReset) {
	    var stickies = stickyboxes;
	    if ($toReset) { // just resetting selected items
	      stickies = [$toReset];
	    }
	    $.each(stickies, function(i, $sb) {
	      var data = $sb.data("stickySB");
	      if (data) {
	        $sb.css({
	            position: data.orig.position
	          , marginTop: data.orig.marginTop
	          , marginLeft: data.orig.marginLeft
	          , left: data.orig.left
	          , top: data.orig.top
	        });
	        if (!$toReset) { // just resetting
	          setPosition($sb);
	          moveIntoView();
	        }
	      }
	    });
	  }

	  $window.bind("scroll", moveIntoView);
	  $window.bind("resize", reset);

	  $.fn.stickySidebar = function (method) {

	    if (methods[method]) {
	      return methods[method].apply(
	          this
	        , Array.prototype.slice.call(arguments, 1)
	      );
	    } else if (!method || typeof method == "object") {
	      return methods.init.apply(this, arguments);
	    }

	  }

	})(jQuery);