Reverting to a “default” jquery function after mouseout

I’m making some boxes move around randomly when the cursor is not over the div that contains them. They will only follow the mouse when it is “hovering” over div.
However I am trying to make the boxes revert to their random “default” movement after the mouseout. If the user scrolls over the div, then the images follow again. I know the function I am trying to use looks like this but somehow I can’t seem to make it work.

<script>
$(document).ready(function(){
  $("(boxes ref)").mouseover(function(){
    (follow cursor)
  });
  $("(boxes ref)").mouseout(function(){
    (random movement)
  });
});
</script>

Original code:

<!DOCTYPE html>
<html>
<head>
<style>

div#container {height:500px;width:500px;}

.a {

position:fixed;
    
}
.b {

position:fixed;
    
}
.c {

position:fixed;
    
}

</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>

$(document).ready(function() {
    animateDiv($('.a'));
        animateDiv($('.b'));
        animateDiv($('.c'));

});

function makeNewPosition($container) {

    // Get viewport dimensions (remove the dimension of the div)
    var h = $container.height() - 50;
    var w = $container.width() - 50;

    var nh = Math.floor(Math.random() * h);
    var nw = Math.floor(Math.random() * w);

    return [nh, nw];

}

function animateDiv($target) {
    var newq = makeNewPosition($target.parent());
    var oldq = $target.offset();
    var speed = calcSpeed([oldq.top, oldq.left], newq);

    $target.animate({
        top: newq[0],
        left: newq[1]
    }, speed, function() {
        animateDiv($target);
    });

};

function calcSpeed(prev, next) {

    var x = Math.abs(prev[1] - next[1]);
    var y = Math.abs(prev[0] - next[0]);

    var greatest = x > y ? x : y;

    var speedModifier = 0.03;

    var speed = Math.ceil(greatest / speedModifier);

    return speed;

}

</script>
</head>
<body>

<div id="container">
 <img src="https://preview.redd.it/u89vxytsqax41.png?auto=webp&s=fe77dd09acb7fd89a637da1b2da760cc9862dc07" alt="prgm" class='a' id='image'>
  <img src="https://preview.redd.it/u89vxytsqax41.png?auto=webp&s=fe77dd09acb7fd89a637da1b2da760cc9862dc07" alt="prgm" class='b' id='image2'>
 <img src="https://preview.redd.it/u89vxytsqax41.png?auto=webp&s=fe77dd09acb7fd89a637da1b2da760cc9862dc07" alt="prgm" class='c' id='image3'>
</div>

<script>

$(document).mousemove(function(e){
/*duration determines the speed of the animation (in this case, the speed to which prgm follows)*/
    $("#image").stop().animate({left:e.pageX, top:e.pageY}, {duration: 5000});
});

</script>

<!-- make the images follow the cursor -->
<script>

$(document).mousemove(function(e){
/*duration determines the speed of the animation (in this case, the speed to which prgm follows)*/
    $("#image2").stop().animate({left:e.pageX, top:e.pageY}, {duration: 5000});
});

</script>

<script>

$(document).mousemove(function(e){
/*duration determines the speed of the animation (in this case, the speed to which prgm follows)*/
    $("#image3").stop().animate({left:e.pageX, top:e.pageY}, {duration: 5000});
});

</script>

</body>
</html>

Thanks