// JavaScript Document

var headerImages = [ 
   'slide-1.jpg',
   'slide-2.jpg',
   'slide-3.jpg',
   'slide-4.jpg',
   'slide-5.jpg',
];

var imgIdx = 0;// Math.floor( Math.random() * headerImages.length );
function setOpacity (obj, percent){
    p = percent/100;
    obj.style.opacity = p;
	obj.style.MozOpacity = p;
	obj.style.filter = "alpha(opacity=" + percent + ")";
}

function showImage(){
    if(!headerImages[imgIdx]) imgIdx = 0;
    var img = headerImages[imgIdx++];
    var headerbg = document.getElementById('headerbg');
    var headerfg = document.getElementById('headerfg');
    headerfg.src = headerbg.src || '/wp-content/themes/digitalbcast/images/slideshow/'+img;
    headerbg.src='/wp-content/themes/digitalbcast/images/slideshow/'+img;
    var opac = 100;
    setOpacity(headerfg, opac);
    
    var opInt = window.setInterval(function(){
            opac = opac * .90;
            if(opac < .5){
                opac = 0;
                window.clearInterval(opInt);
            }
            setOpacity(headerfg, opac);
        }, 50);
    
}

showImage();
window.setInterval(showImage, 5000);