I created a base line navigation with buttons but I dont't have any idea how from Javascript intercept a mouse-click event. How to get the click position I know, but this procedure needs to be activated by the here asked mouse-event.
You can try this code in your browser:
<!DOCTYPE html>
<html>
<body>
<h2 onclick="showCoords(event)">Click this heading to get the x (horizontal) and y (vertical) coordinates of the mouse pointer when it was clicked.</h2>
<p><strong>Tip:</strong> Try to click different places in the heading.</p>
<p id="demo"></p>
<script>
function showCoords(event) {
var x = event.clientX;
var y = event.clientY;
var coords = "X coords: " + x + ", Y coords: " + y;
document.getElementById("demo").innerHTML = coords;
}
</script>
</body>
</html>