function mouseEvent(type, sx, sy, cx, cy) {
var evt;
var e = {
bubbles: true,
cancelable: (type != "mousemove"),
view: window,
detail: 0,
screenX: sx,
screenY: sy,
clientX: cx,
clientY: cy,
ctrlKey: false,
altKey: false,
shiftKey: false,
metaKey: false,
button: 0,
relatedTarget: undefined
};
if (typeof( document.createEvent ) == "function") {
evt = document.createEvent("MouseEvents");
evt.initMouseEvent(type,
e.bubbles, e.cancelable, e.view, e.detail,
e.screenX, e.screenY, e.clientX, e.clientY,
e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
e.button, document.body.parentNode);
} else if (document.createEventObject) {
evt = document.createEventObject();
for (prop in e) {
evt[prop] = e[prop];
}
evt.button = { 0:1, 1:4, 2:2 }[evt.button] || evt.button;
}
return evt;
}
var a = document.getElementsByClassName("spinner")[0],
b = document.getElementById("speed");
a.addEventListener("mousemove", function(e){console.log("clientX:" + e.clientX +", clientY:" + e.clientY +", screenX:" + e.screenX +", screenY:" + e.screenY +", movementX:" + e.movementX);});
function bootRot(x, y){
a.dispatchEvent(mouseEvent("mousemove", x, y, x, y));
}