// slideshowfunctions.js // the following to be placed in the ... // function imageItem(image_location) { this.image_item = new Image(); this.image_item.src = image_location; } function get_ImageItemLocation(imageObj) { return(imageObj.image_item.src) } function randNum(x, y) { var range = y - x + 1; return Math.floor(Math.random() * range) + x; } function getNextImage() { if (random_display) { imageNum = randNum(0, totalImages-1); } else { imageNum = (imageNum+1) % totalImages; } var new_image = get_ImageItemLocation(imageArray[imageNum]); return(new_image); } function getFirstImage() { imageNum = 0; var new_image = get_ImageItemLocation(imageArray[imageNum]); return(new_image); } function firstImage(place) { var new_image = getFirstImage(); document[place].src = new_image; } function getLastImage() { imageNum = totalImages-1; var new_image = get_ImageItemLocation(imageArray[imageNum]); return(new_image); } function lastImage(place) { var new_image = getLastImage(); document[place].src = new_image; } function getPrevImage() { imageNum = (imageNum-1) % totalImages; var new_image = get_ImageItemLocation(imageArray[imageNum]); return(new_image); } function prevImage(place) { var new_image = getPrevImage(); document[place].src = new_image; } function switchImage(place) { var new_image = getNextImage(); document[place].src = new_image; var recur_call = "switchImage('"+place+"')"; timerID = setTimeout(recur_call, interval); }