<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
body{
display: flex;
}
div {
width: 200px;
height: 100px;
overflow: hidden;
margin: 0;
}
.tab1 {
background: #FFCC00;
width: 20px;
}
.tab2{
background: #66CC66;
}
.tab3 {
background: #3399CC;
width: 20px;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function(){
var div = $("div"), temp = div[1];
div.click(function() {
var left = $(this).css("left");
$(this).stop().animate({width: 200},1500);
$(temp).not(this).stop().animate({width: 20},1500);
temp = this;
});
});
</script>
</head>
<body>
<div class='tab1'></div>
<div class='tab2'></div>
<div class='tab3'></div>
</body>
</html>