$(window).load(function () {
  $('#imgSlider').nivoSlider({
    effect: 'boxRandom', // Specify sets like: 'fold,fade,sliceDown'
    slices: 15, // For slice animations
    boxCols: 10, // For box animations
    boxRows: 6, // For box animations
    animSpeed: 500, // Slide transition speed
    pauseTime: 4000, // How long each slide will show
    startSlide: Math.floor(Math.random() * 10), // Set starting Slide (0 index)
    directionNav: true, // Next & Prev navigation
    directionNavHide:false,
    controlNav: false, // 1,2,3... navigation
    captionOpacity: 0.8 // Universal caption opacity
  });
});