$(document).ready(function() {

var currentChild = 0;
var prevChild = 0;
var numChildren = 0;

function imageFade(){
    
    prevChild = currentChild;
    if(currentChild == numChildren){
        currentChild = 1;
    }else{
        currentChild++;
    }
    
    jQuery("#headerSlideshow").children(':nth-child(' + currentChild + ')').fadeIn(1200);
    jQuery("#headerSlideshow").children(':nth-child(' + prevChild + ')').fadeOut(1200);
}

jQuery(document).ready(function(){
    setInterval(imageFade,3500);
    numChildren = jQuery("#headerSlideshow").children().length;
    imageFade();
});


});