CODE EXAMPLE FOR JAVASCRIPT

javascript change right click menu

var i = document.getElementById("menu").style;
if (document.addEventListener) {
  document.addEventListener('contextmenu', function(e) {
    var posX = e.clientX;
    var posY = e.clientY;
    menu(posX, posY);
    e.preventDefault();
  }, false);
  document.addEventListener('click', function(e) {
    i.opacity = "0";
    setTimeout(function() {
      i.visibility = "hidden";
    }, 501);
  }, false);
} else {
  document.attachEvent('oncontextmenu', function(e) {
    var posX = e.clientX;
    var posY = e.clientY;
    menu(posX, posY);
    e.preventDefault();
  });
  document.attachEvent('onclick', function(e) {
    i.opacity = "0";
    setTimeout(function() {
      i.visibility = "hidden";
    }, 501);
  });
}

function menu(x, y) {
  i.top = y + "px";
  i.left = x + "px";
  i.visibility = "visible";
  i.opacity = "1";
}