From my experience there isn't much you can do in terms of editing their manager.
However, it is quite easy to make your own with some CSS and Javascript.
Fiddle
Learning Tutorial
HTML:
<div id="slider" class="slider">
<div class="wrapper">
<div id="items" class="items">
<span class="slide"><img src="image1"/></span>
<span class="slide"><img src="image2"/></span>
<span class="slide"><img src="image3"/></span>
</div>
</div>
<a id="prev" class="control prev"></a>
<a id="next" class="control next"></a>
</div>
CSS:
.slider {
width: 300px;
height: 200px;
}
.wrapper {
overflow: hidden;
position: relative;
background: #222;
z-index: 1;
}
#items {
width: 10000px;
position: relative;
top: 0;
left: -300px;
}
#items.shifting {
transition: left .2s ease-out;
}
.slide {
width: 300px;
height: 200px;
cursor: pointer;
float: left;
display: flex;
flex-direction: column;
justify-content: center;
transition: all 1s;
position: relative;
}
.control {
position: absolute;
top: 50%;
width: 40px;
height: 40px;
background: #fff;
border-radius: 20px;
margin-top: -20px;
box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.3);
z-index: 2;
}
.prev,
.next {
background-size: 22px;
background-position: center;
background-repeat: no-repeat;
cursor: pointer;
}
.prev {
background-image: url(ChevronLeft.png);
left: -20px;
}
.next {
background-image: url(ChevronRight-512.png);
right: -20px;
}
.prev:active,
.next:active {
transform: scale(0.8);
}
Javascript:
var slider = document.getElementById('slider'),
sliderItems = document.getElementById('items'),
prev = document.getElementById('prev'),
next = document.getElementById('next');
slide(slider, sliderItems, prev, next);
function slide(wrapper, items, prev, next) {
var posX1 = 0,
posX2 = 0,
posInitial,
posFinal,
threshold = 100,
slides = items.getElementsByClassName('slide'),
slidesLength = slides.length,
slideSize = items.getElementsByClassName('slide')[0].offsetWidth,
firstSlide = slides[0],
lastSlide = slides[slidesLength - 1],
cloneFirst = firstSlide.cloneNode(true),
cloneLast = lastSlide.cloneNode(true),
index = 0,
allowShift = true;
// Clone first and last slide
items.appendChild(cloneFirst);
items.insertBefore(cloneLast, firstSlide);
wrapper.classList.add('loaded');
// Mouse and Touch events
items.onmousedown = dragStart;
// Touch events
items.addEventListener('touchstart', dragStart);
items.addEventListener('touchend', dragEnd);
items.addEventListener('touchmove', dragAction);
// Click events
prev.addEventListener('click', function () { shiftSlide(-1) });
next.addEventListener('click', function () { shiftSlide(1) });
// Transition events
items.addEventListener('transitionend', checkIndex);
function dragStart (e) {
e = e || window.event;
e.preventDefault();
posInitial = items.offsetLeft;
if (e.type == 'touchstart') {
posX1 = e.touches[0].clientX;
} else {
posX1 = e.clientX;
document.onmouseup = dragEnd;
document.onmousemove = dragAction;
}
}
function dragAction (e) {
e = e || window.event;
if (e.type == 'touchmove') {
posX2 = posX1 - e.touches[0].clientX;
posX1 = e.touches[0].clientX;
} else {
posX2 = posX1 - e.clientX;
posX1 = e.clientX;
}
items.style.left = (items.offsetLeft - posX2) + "px";
}
function dragEnd (e) {
posFinal = items.offsetLeft;
if (posFinal - posInitial < -threshold) {
shiftSlide(1, 'drag');
} else if (posFinal - posInitial > threshold) {
shiftSlide(-1, 'drag');
} else {
items.style.left = (posInitial) + "px";
}
document.onmouseup = null;
document.onmousemove = null;
}
function shiftSlide(dir, action) {
items.classList.add('shifting');
if (allowShift) {
if (!action) { posInitial = items.offsetLeft; }
if (dir == 1) {
items.style.left = (posInitial - slideSize) + "px";
index++;
} else if (dir == -1) {
items.style.left = (posInitial + slideSize) + "px";
index--;
}
};
allowShift = false;
}
function checkIndex (){
items.classList.remove('shifting');
if (index == -1) {
items.style.left = -(slidesLength * slideSize) + "px";
index = slidesLength - 1;
}
if (index == slidesLength) {
items.style.left = -(1 * slideSize) + "px";
index = 0;
}
allowShift = true;
}
}
