function scr_dark_marker_animated()
{
    var x_pos = argument[0];
    var y_pos = argument[1];
    var sprite = argument[2];
    var anim_speed = (argument_count > 3) ? argument[3] : 0.2;
    thismarker = instance_create(x_pos, y_pos, obj_marker);
    with (thismarker)
    {
        sprite_index = sprite;
        image_speed = anim_speed;
        image_xscale = 2;
        image_yscale = 2;
        scr_depth();
    }
    return thismarker;
}