div.mSlide_btnLeft {
width: 5%;
height: 100%;
position: absolute;
left: 0;
top: 0;
background: #000;
z-index: 100;
opacity: .5;
}
div.mSlide_btnRight {
width: 5%;
height: 100%;
position: absolute;
right: 0;
top: 0;
background: #000;
z-index: 100;
opacity: .5;
}