SLICEofBIRD,
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<style>
body {
background-color: blue;
}
img {
-webkit-transition:all 3s linear;
-moz-transition:all 3s linear;
-o-transition:all 3s linear;
transition:all 3s linear;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script>
function showImg() {
$("#start").css("display", "none");
$("img").css("top","0");
}
</script>
</head>
<body>
<input id="start" type=button value="Кликни" onclick="showImg();"/>
<div class="clc" style="position: absolute; width:336px; height:100px; top:50px; left:100px; overflow: hidden;">
<img style="position: absolute; width:336px; height:76px; top: -76px;" src="http://javascript.ru/forum/images/ca_serenity/misc/logo.gif" alt="" />
</div>
</body>
</html>