function setup () {
    var images = document.getElementById("mycarousel");
    images = images.getElementsByTagName("img");

    for (var i = 0; i< images.length; i++) {
        images[i].onclick = imgReplace (images[i]);
    }

}

images[i].onclick = function() {imgReplace(images[i]);};

images[i].onclick = (function(i) { return function() { imgReplace(images[i]); }; })(i);

images[i].onclick = function() { imgReplace (images[i]); };

images[i].click = function(){ imgReplace( images[i] ) }

for (var i = 0; i< images.length; i++) {
    var imageIndex = i;
    images[i].onclick = function(){ imgReplace (images[imageIndex]); }
}

images[i].onclick = function() {imgReplace(images[i]);}