/*
			* jQuery easing functions (for this demo)
			*/
			jQuery.extend( jQuery.easing,{
				def: 'easeOutQuad',
				swing: function (x, t, b, c, d) {
					//alert(jQuery.easing.default);
					return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
				},
				easeInQuad: function (x, t, b, c, d) {
					return c*(t/=d)*t + b;
				},
				easeOutQuad: function (x, t, b, c, d) {
					return -c *(t/=d)*(t-2) + b;
				},
				easeInOutQuad: function (x, t, b, c, d) {
					if ((t/=d/2) < 1) return c/2*t*t + b;
					return -c/2 * ((--t)*(t-2) - 1) + b;
				},
				easeOutElastic: function (x, t, b, c, d) {
					var s=1.70158;var p=0;var a=c;
					if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
					if (a < Math.abs(c)) { a=c; var s=p/4; }
					else var s = p/(2*Math.PI) * Math.asin (c/a);
					return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
				},
				easeInOutElastic: function (x, t, b, c, d) {
					var s=1.70158;var p=0;var a=c;
					if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
					if (a < Math.abs(c)) { a=c; var s=p/4; }
					else var s = p/(2*Math.PI) * Math.asin (c/a);
					if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
					return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
				},
				easeInBack: function (x, t, b, c, d, s) {
					if (s == undefined) s = 1.70158;
					return c*(t/=d)*t*((s+1)*t - s) + b;
				},
				easeOutBack: function (x, t, b, c, d, s) {
					if (s == undefined) s = 1.70158;
					return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
				},
				easeInOutBack: function (x, t, b, c, d, s) {
					if (s == undefined) s = 1.70158; 
					if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
					return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
				}
			});
			/*
			 * stickyfloat - jQuery plugin for verticaly floating anything in a constrained area
			 * 
			 * Example: jQuery('#menu').stickyfloat({duration: 400});
			 * parameters:
			 * 		duration 	(200)	 - the duration of the animation
			 *		startOffset (number) - the amount of scroll offset after the animations kicks in
			 *		offsetY		(number) - the offset from the top when the object is animated
			 *		lockBottom	(true)	 - set to false if you don't want your floating box to stop at parent's bottom
			 *		delay		(0)		 - delay in milliseconds  until the animnations starts
					easing		(linear) - easing function (jQuery has by default only 'swing' & 'linear')
			 * $Version: 08.10.2011 r2
			 * $Version: 05.16.2009 r1
			 * Copyright (c) 2009 Yair Even-Or
			 * vsync.design@gmail.com
			 */
			(function($){
				$.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;
					}
					
					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, 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);