[jQuery] drawing on mousemove - performance problem

[powtac]

Is there a way to reduce the cpu load when I do something like this
(and move the pointer very fast on the screen):

$(document).mousemove(function(e) {
        x = e.pageX;
        y = e.pageY;
        draw([x,y]);
});

Something like, "wait until the browser is ready" ?