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HTML 

              
                <nav>
    <div class="menu">
        <div class="bar"></div>
        <div class="bar"></div>
        <div class="bar"></div>
    </div>
    <div class="circle hidenav">
        <ul>
            <li> <a href="#">test1</a>

            </li>
            <li> <a href="#">test2</a>

            </li>
            <li> <a href="#">test3</a>

            </li>
            <li> <a href="#">test1</a>

            </li>
            <li> <a href="#">test2</a>

            </li>
            <li> <a href="#">test3</a>

            </li>
            <li> <a href="#">test1</a>

            </li>
            <li> <a href="#">test3</a>

            </li>
            <li> <a href="#">test3</a>

            </li>
        </ul>
    </div>
</nav>
<div class="intro">
    <p>A title goes here!</p>
    <div class="scrolldown"></div>
</div>
<div class="content">
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam elementum libero eu eleifend congue. Aenean laoreet pharetra tortor, quis egestas dolor bibendum non. Duis posuere odio quis turpis faucibus, eu viverra odio ultricies. Interdum et malesuada fames ac ante ipsum primis in faucibus. Nulla facilisis in nisl et placerat. Donec interdum odio libero, eu dictum urna condimentum non. Quisque justo libero, bibendum suscipit tincidunt ut, accumsan eget diam. Duis condimentum nulla a felis accumsan, vitae consectetur risus egestas. Maecenas suscipit tortor vel libero molestie, vitae convallis massa condimentum.</p>
    <p>Sed metus urna, cursus nec euismod bibendum, pharetra sit amet mi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Maecenas accumsan tellus sed sapien imperdiet, vel convallis ligula mollis. Nullam sagittis dolor et molestie aliquet. Nulla volutpat pulvinar lacus, non accumsan risus gravida eget. Ut suscipit, orci non porta pretium, lectus sem tincidunt erat, vitae commodo nulla est vitae orci. Aenean ullamcorper ornare lorem, at dapibus nisl iaculis eu. Aenean ut venenatis est. In sagittis libero quis nulla interdum euismod. Integer tempor blandit velit id laoreet. In quis fringilla tortor.</p>
    <p>Suspendisse tortor risus, porttitor nec est vitae, facilisis vestibulum lorem. Aenean elit nisi, convallis et ullamcorper accumsan, luctus id velit. Aliquam erat volutpat. Pellentesque vulputate, augue eget facilisis porttitor, risus dui auctor eros, non rhoncus lorem risus eget lectus. Phasellus suscipit nibh nec sapien elementum, sit amet hendrerit tortor ornare. Quisque blandit eu metus in pharetra. Curabitur porttitor velit ut vestibulum iaculis. Nunc pharetra ante sit amet urna porttitor, ut venenatis diam fringilla. Nulla facilisi.
        <p>Maecenas ut vulputate nulla, vel sodales lectus. Fusce vestibulum, sapien et ultrices aliquet, urna nibh tristique erat, nec sodales arcu urna eget nulla. Quisque convallis quam sed risus aliquam, id consequat augue facilisis. Praesent ultrices faucibus dui eget laoreet. In pharetra sit amet erat ac aliquam. Aliquam tincidunt leo in laoreet ornare. Quisque ac ante gravida, vehicula velit vitae, pretium felis. Sed mattis lorem non arcu ultricies, sit amet venenatis diam pulvinar. Fusce euismod egestas metus sed bibendum. Etiam ut tincidunt enim, commodo ornare lectus. Etiam magna elit, faucibus sit amet lobortis id, ultrices a ipsum. Praesent sit amet porttitor orci. Sed ornare laoreet nibh, rutrum consectetur tellus ornare a. Suspendisse porttitor magna sed nisi mollis, sed elementum lacus tincidunt.</p>
        <p>Mauris at magna ipsum. Fusce ornare augue eu lectus pharetra, et fringilla arcu ultricies. Sed eu sapien tellus. Mauris faucibus dui sit amet eros sagittis, non accumsan erat tincidunt. Integer a libero consequat enim tempor scelerisque. Maecenas ac est ipsum. Pellentesque sed pulvinar magna.</p>
</div>
!

CSS 

              
                html, body {
    height: 99%;
    min-height: 99%;
}
body {
    padding: 0;
    margin: 0;
    background: url(http://upload.wikimedia.org/wikipedia/commons/c/cd/Orion_Rainbow.jpg) no-repeat center center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.intro {
    text-align: center;
    height: 99%;
    min-height: 99%;
    position: relative;
}
.intro p {
    color: #fefefe;
    font-weight: bold;
    font-family:'Arial Narrow', sans-serif;
    text-transform: uppercase;
    text-shadow: 0 2px 5px rgba(0, 0, 0, .6)
}
.scrolldown {
    border-style: dashed;
    border-color: transparent;
    border-width: 0.53em;
    display: -moz-inline-box;
    display: inline-block;
    /* Use font-size to control the size of the arrow. */
    font-size: 20px;
    height: 0;
    line-height: 0;
    position: absolute;
    bottom: 20px;
    left: 50%;
    width: 0;
    border-top-width: 1em;
    border-top-style: solid;
    border-top-color: #eee;
}
.content {
    padding: 20px;
    background: #eee;
}
p {
    padding-bottom: 20px;
    font-size: 20px;
    line-height: 1.5;
}
nav {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 9999;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
nav .menu {
    position: fixed;
    padding: 14px 0;
    /*height and padding(top/bottom) add up to 60px(same as width)*/
    height: 32px;
    width: 60px;
    top: 20px;
    right: 20px;
    border-radius: 50%;
    z-index: 999;
    cursor: pointer;
    background: rgb(255, 255, 255);
    background: -moz-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(229, 229, 229, 1) 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 1)), color-stop(100%, rgba(229, 229, 229, 1)));
    background: -webkit-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(229, 229, 229, 1) 100%);
    background: -o-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(229, 229, 229, 1) 100%);
    background: -ms-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(229, 229, 229, 1) 100%);
    background: linear-gradient(to bottom, rgba(255, 255, 255, 1) 0%, rgba(229, 229, 229, 1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#e5e5e5', GradientType=0);
    box-shadow: 0px 0px 0px 2px rgba(0, 0, 0, .25);
    -webkit-transition: all 300ms ease;
    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    transition: all 300ms ease;
}
nav .menu:hover {
    -moz-transform: scale(1.1);
    -webkit-transform: scale(1.1);
    -o-transform: scale(1.1);
    -ms-transform: scale(1.1);
    transform: scale(1.1);
}
nav .menu:active {
    -moz-transform: scale(.9);
    -webkit-transform: scale(.9);
    -o-transform: scale(.9);
    -ms-transform: scale(.9);
    transform: scale(.9);
}
nav .menu .bar {
    height: 4px;
    width: 30px;
    border-radius: 2px;
    margin: 5px auto;
    display:block;
    z-index: 9999;
    background: #aaa;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, .5);
    -webkit-transition: all 300ms ease;
    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    transition: all 300ms ease;
}
nav .menu:hover > .bar {
    background: rgba(100, 160, 255, 1);
}
nav .circle {
    -moz-opacity: 1;
    opacity: 1;
    font-size: 20px;
    color: #eee;
    position: fixed;
    top: -170px;
    right: -170px;
    display: block;
    height: 400px;
    width: 400px;
    background: rgba(100, 100, 100, .9);
    box-shadow: 0px 0px 0px 2px rgba(0, 0, 0, .5), inset 0 0 200px rgba(0, 0, 0, .5);
    padding: 20px;
    -webkit-transition: all 300ms ease;
    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    transition: all 300ms ease;
    border-radius: 50%;
    overflow:hidden !important;
}
nav .circle li {
    list-style:none !important;
    background: rgba(0, 0, 0, 0);
}
nav .circle li a {
    -moz-opacity: 1;
    opacity: 1;
    position: absolute;
    top: -80px;
    left: 220px;
    display:block;
    width: 500px;
    height: 300px;
    background: rgba(50, 50, 50, .5);
    box-shadow: inset 0 0 0 2px rgba(0, 0, 0, .1);
    -webkit-transform-origin: 0% 100%;
    -webkit-transition: all 300ms ease;
    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    transition: all 300ms ease;
}
nav .circle li a:hover {
    background: rgba(255, 120, 20, 1) !important;
}
nav .circle li:first-child a {
    -webkit-transform: rotate(-165deg) skewX(-50deg);
}
nav .circle li:nth-child(2) a {
    -webkit-transform: rotate(-205deg) skewX(-50deg);
}
nav .circle li:nth-child(3) a {
    -webkit-transform: rotate(-245deg) skewX(-50deg);
}
nav .circle li:nth-child(4) a {
    -webkit-transform: rotate(-285deg) skewX(-50deg);
    pointer-events: none;
}
nav .circle li:nth-child(5) a {
    -webkit-transform: rotate(-325deg) skewX(-50deg);
    pointer-events: none;
}
nav .circle li:nth-child(6) a {
    -webkit-transform: rotate(-45deg) skewX(-50deg);
    pointer-events: none;
}
nav .circle li:nth-child(7) a {
    -webkit-transform: rotate(-5deg) skewX(-50deg);
    pointer-events: none;
}
nav .circle li:nth-child(8) a {
    -webkit-transform: rotate(275deg) skewX(-50deg);
    pointer-events: none;
}
nav .circle li:last-child a {
    -webkit-transform: rotate(235deg) skewX(-50deg);
    pointer-events: none;
}
nav .hidenav {
    -moz-opacity: .5;
    opacity: .5;
    -moz-transform: scale(0.1) rotate(-60deg);
    -webkit-transform: scale(0.1) rotate(-60deg);
    -o-transform: scale(0.1) rotate(-60deg);
    -ms-transform: scale(0.1) rotate(-60deg);
    transform: scale(0.1) rotate(-60deg);
}
!

JS 

              
                $("nav .menu").click(function () {
    $('nav .circle a').css("background", "rgba(50,50,50,.5)");
    $('nav .circle').stop().toggleClass('hidenav');
});
$("a").click(function () {
    $(this).css("background", "rgba(255,200,0,1)");
    setTimeout(function () {
        $('nav .circle').stop().addClass('hidenav');
    }, 1000);
});
!
999px

Console