<!DOCTYPE html>
<html>
<head>
<title>Page with overflow</title>
<style>
#over {
width:400px;
height: 300px;
overflow-x: hidden;
overflow-y: scroll;
}
</style>
</head>
<body>
<div id="over">
<div style="width: 5000px;">
<div style="width: 100%; text-align: right;" ><a href="#" id="right" onclick="document.getElementById('right-clicked').textContent='ok'">Click right</a></div>
</div>
<div style="height: 5000px; width: 5000px;">
Right clicked: <span id="right-clicked"></span></br>
Bottom clicked: <span id="bottom-clicked"></span></br>
Bottom-right clicked: <span id="bottom-right-clicked"></span></br>
</div>
<div style="width: 5000px;">
<div style="width: 100%; text-align: right;" ><a href="#" id="bottom-right" onclick="document.getElementById('bottom-right-clicked').textContent='ok'">Click bottom-right</a></div>
</div>
<a href="#" id="bottom" onclick="document.getElementById('bottom-clicked').textContent='ok'">Click bottom</a>
</div>
</body>
</html>