jQuery.easing = { easein: function (x, t, b, c, d) { return c * (t /= d) * t + b }, easeinout: function (x, t, b, c, d) { if (t < d / 2) return 2 * c * t * t / (d * d) + b; var a = t - d / 2; return -2 * c * a * a / (d * d) + 2 * c * a / d + c / 2 + b }, easeout: function (x, t, b, c, d) { return -c * t * t / (d * d) + 2 * c * t / d + b }, expoin: function (x, t, b, c, d) { var a = 1; if (c < 0) { a *= -1; c *= -1 } return a * (Math.exp(Math.log(c) / d * t)) + b }, expoout: function (x, t, b, c, d) { var a = 1; if (c < 0) { a *= -1; c *= -1 } return a * (-Math.exp(-Math.log(c) / d * (t - d)) + c + 1) + b }, expoinout: function (x, t, b, c, d) { var a = 1; if (c < 0) { a *= -1; c *= -1 } if (t < d / 2) return a * (Math.exp(Math.log(c / 2) / (d / 2) * t)) + b; return a * (-Math.exp(-2 * Math.log(c / 2) / d * (t - d)) + c + 1) + b }, bouncein: function (x, t, b, c, d) { return c - jQuery.easing['bounceout'](x, d - t, 0, c, d) + b }, bounceout: function (x, t, b, c, d) { if ((t /= d) < (1 / 2.75)) { return c * (7.5625 * t * t) + b } else if (t < (2 / 2.75)) { return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b } else if (t < (2.5 / 2.75)) { return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b } else { return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b } }, bounceinout: function (x, t, b, c, d) { if (t < d / 2) return jQuery.easing['bouncein'](x, t * 2, 0, c, d) * .5 + b; return jQuery.easing['bounceout'](x, t * 2 - d, 0, c, d) * .5 + c * .5 + b }, elasin: 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 -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b }, elasout: 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 }, elasinout: 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 }, backin: function (x, t, b, c, d) { var s = 1.70158; return c * (t /= d) * t * ((s + 1) * t - s) + b }, backout: function (x, t, b, c, d) { var s = 1.70158; return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b }, backinout: function (x, t, b, c, d) { var 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 }, linear: function (x, t, b, c, d) { return c * t / d + b } };

(function ($) { $.fn.lavaLamp = function (o) { o = $.extend({ fx: "linear", speed: 500, click: function () { } }, o || {}); return this.each(function () { var b = $(this), noop = function () { }, $back = $('<li class="back"><div class="left"></div></li>').appendTo(b), $li = $("li", this), curr = $("li.current", this)[0] || $($li[0]).addClass("current")[0]; $li.not(".back").hover(function () { move(this) }, noop); $(this).hover(noop, function () { move(curr) }); $li.click(function (e) { setCurr(this); return o.click.apply(this, [e, this]) }); setCurr(curr); function setCurr(a) { $back.css({ "left": a.offsetLeft + "px", "width": a.offsetWidth + "px" }); curr = a }; function move(a) { $back.each(function () { $(this).dequeue() }).animate({ width: a.offsetWidth, left: a.offsetLeft }, o.speed, o.fx) } }) } })(jQuery);