$(window).load(function() {

var total = $('#slider img').length;
var rand = Math.floor(Math.random()*total);

    $('#slider').nivoSlider({
        effect:'fade', // Specify sets like: 'fold,fade,sliceDown'
        slices:4, // For slice animations
        boxCols: 8, // For box animations
        boxRows: 4, // For box animations
        animSpeed:500, // Slide transition speed
        pauseTime:5000, // How long each slide will show
        startSlide:rand, // Set starting Slide (0 index)
        directionNav:false, // Next & Prev navigation
        directionNavHide:false, // Only show on hover
        controlNav:false, // 1,2,3... navigation

        keyboardNav:false, // Use left & right arrows
        pauseOnHover:true, // Stop animation while hovering
        manualAdvance:false, // Force manual transitions

        beforeChange: function(){}, // Triggers before a slide transition
        afterChange: function(){}, // Triggers after a slide transition
        slideshowEnd: function(){}, // Triggers after all slides have been shown
        lastSlide: function(){}, // Triggers when last slide is shown
        afterLoad: function(){} // Triggers when slider has loaded
    });
});