<style type='text/css'>
#swipe {
background:#fff;
position:absolute;
bottom:0;
left:0;
right:0;
z-index:1000;
padding:10px;
height:30px;
}
#swipe #handle {
position:absolute;
height:20px;
padding:5px;
background:#aaa;
font-weight:bold;
border:1px solid #333;
cursor:pointer;
-webkit-user-select: none;
}
.map-attribution {
bottom: 50px;
}
</style>
<div id='swipe'>
<div id='handle'>drag</div>
</div>
<div id='map'></div>
<script>
var map = mapbox.map('map'),
layers = document.getElementById('layers');
map.addLayer(mapbox.layer().id('examples.map-a1dcgmtr').composite(false));
map.addLayer(mapbox.layer().id('examples.map-20v6611k').composite(false));
map.zoom(3);
map.ui.attribution.add()
.content('<a href="http://mapbox.com/about/maps">Terms & Feedback</a>');
var l_parent = map.getLayerAt(1).parent,
handle = document.getElementById('handle'),
dragging = false;
handle.onmousedown = function() { dragging = true; return false;}
document.onmouseup = function() { dragging = false; }
document.onmousemove = function(e) {
if (!dragging) return;
setDivide(MM.getMousePoint(e, map).x);
}
function setDivide(x) {
x = Math.max(0, Math.min(x, map.dimensions.x));
handle.style.left = (x - 20) + 'px';
l_parent.style.clip = 'rect(0px ' + x + 'px 9999999px 0px)';
}
setDivide(300);
</script>