(function($){
	$.fn.stickyfloat = function(options, lockBottom){
                    var $obj 				= this,
                            doc					= $(document),
                            opts, bottomPos, pastStartOffset, objFartherThanTopPos, objBiggerThanWindow, newpos, checkTimer, lastDocPos = doc.scrollTop(),
                            parentPaddingTop 	= parseInt($obj.parent().css('padding-top')),
                            startOffset 		= $obj.parent().offset().top;
                    $.extend( $.fn.stickyfloat.opts, options, { startOffset:startOffset, offsetY:parentPaddingTop} );
                    opts = $.fn.stickyfloat.opts;
                    $obj.css({ position: 'absolute' });

                    if(opts.lockBottom){
                            bottomPos = $obj.parent().height() - $obj.outerHeight() + parentPaddingTop; //get the maximum scrollTop value
                            if( bottomPos < 0 )
                                    bottomPos = 0;
                    } else {
                        bottomPos = document.body.offsetHeight - $('#footer').outerHeight(true)- $obj.outerHeight(true);
                    }

                    function checkScroll(){
                            if( opts.duration > 40 ){
                                    clearTimeout(checkTimer);
                                    checkTimer = setTimeout(function(){
                                            if( Math.abs(doc.scrollTop() - lastDocPos) > 0 ){
                                                    lastDocPos = doc.scrollTop();
                                                    initFloat();
                                            }
                                    },40);
                            }
                            else initFloat();
                    }

                    function initFloat(){
                            $obj.stop(); // stop all calculations on scroll event

                            pastStartOffset			= doc.scrollTop() > opts.startOffset;	// check if the window was scrolled down more than the start offset declared.
                            objFartherThanTopPos	= $obj.offset().top > startOffset;	// check if the object is at it's top position (starting point)
                            objBiggerThanWindow 	= $obj.outerHeight() < $(window).height();	// if the window size is smaller than the Obj size, then do not animate.

                            // if window scrolled down more than startOffset OR obj position is greater than
                            // the top position possible (+ offsetY) AND window size must be bigger than Obj size
                            if( (pastStartOffset || objFartherThanTopPos) && objBiggerThanWindow ){
                                    newpos = (doc.scrollTop() +startOffset + opts.offsetY );

                                    if ( newpos > bottomPos )
                                            newpos = bottomPos;
                                    if ( doc.scrollTop() < opts.startOffset ) // if window scrolled < starting offset, then reset Obj position (opts.offsetY);
                                            newpos = parentPaddingTop;
                                                
                                    $obj.delay(opts.delay).animate({ top: newpos }, opts.duration , opts.easing );
                            }
                    }

                    $(window).scroll(checkScroll);
            };

            $.fn.stickyfloat.opts = { duration:200, lockBottom:true , delay:0, easing:'linear'  };
    })(jQuery);