<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Pirates Booty</title>
<script>
window.onload = init;
function init(){
var map = document.getElementById("map");
map.onmousemove = showCoords;
}
function showCoords(eventObj){
var map = document.getElementById("coords");
x = eventObj.clientX;
y = eventObj.clientY;
map.innerHTML = "Map coordinates: " + x + "," + y;
}
</script>
</head>
<body>
<img id="map" src="map.jpg">
<p id="coords">Move mouse to find coordinate..</p>
</body>
</html>