if(document.images){
img_onNext=new Image();img_onNext.src="images/next-over.png"
img_offNext=new Image();img_offNext.src="images/next.png"
img_onPrivious=new Image();img_onPrivious.src="images/previous-over.png"
img_offPrivious=new Image();img_offPrivious.src="images/previous.png"
}
//1
function handleOverNext(){
if(document.images)document.imgName.src=img_onNext.src}
function handleOutNext(){
if(document.images)document.imgName.src=img_offNext.src}
function handleOverPrevious(){
if(document.images)document.imgTutor.src=img_onPrivious.src}
function handleOutPrevious(){
if(document.images)document.imgTutor.src=img_offPrivious.src}
//2
function handleOverNext1(){
if(document.images)document.imgName1.src=img_onNext.src}
function handleOutNext1(){
if(document.images)document.imgName1.src=img_offNext.src}
function handleOverPrevious1(){
if(document.images)document.imgTutor1.src=img_onPrivious.src}
function handleOutPrevious1(){
if(document.images)document.imgTutor1.src=img_offPrivious.src}
//2
function handleOverNext2(){
if(document.images)document.imgName2.src=img_onNext.src}
function handleOutNext2(){
if(document.images)document.imgName2.src=img_offNext.src}
function handleOverPrevious2(){
if(document.images)document.imgTutor2.src=img_onPrivious.src}
function handleOutPrevious2(){
if(document.images)document.imgTutor2.src=img_offPrivious.src}
//3
function handleOverNext3(){
if(document.images)document.imgName3.src=img_onNext.src}
function handleOutNext3(){
if(document.images)document.imgName3.src=img_offNext.src}
function handleOverPrevious3(){
if(document.images)document.imgTutor3.src=img_onPrivious.src}
function handleOutPrevious3(){
if(document.images)document.imgTutor3.src=img_offPrivious.src}
//4
function handleOverNext4(){
if(document.images)document.imgName4.src=img_onNext.src}
function handleOutNext4(){
if(document.images)document.imgName4.src=img_offNext.src}
function handleOverPrevious4(){
if(document.images)document.imgTutor4.src=img_onPrivious.src}
function handleOutPrevious4(){
if(document.images)document.imgTutor4.src=img_offPrivious.src}

function handleOverNext5(){
if(document.images)document.imgName5.src=img_onNext.src}
function handleOutNext5(){
if(document.images)document.imgName5.src=img_offNext.src}
function handleOverPrevious5(){
if(document.images)document.imgTutor5.src=img_onPrivious.src}
function handleOutPrevious5(){
if(document.images)document.imgTutor5.src=img_offPrivious.src}

function handleOverNext6(){
if(document.images)document.imgName6.src=img_onNext.src}
function handleOutNext6(){
if(document.images)document.imgName6.src=img_offNext.src}
function handleOverPrevious6(){
if(document.images)document.imgTutor6.src=img_onPrivious.src}
function handleOutPrevious6(){
if(document.images)document.imgTutor6.src=img_offPrivious.src}

function handleOverNext7(){
if(document.images)document.imgName7.src=img_onNext.src}
function handleOutNext7(){
if(document.images)document.imgName7.src=img_offNext.src}
function handleOverPrevious7(){
if(document.images)document.imgTutor7.src=img_onPrivious.src}
function handleOutPrevious7(){
if(document.images)document.imgTutor7.src=img_offPrivious.src}

function handleOverNext8(){
if(document.images)document.imgName8.src=img_onNext.src}
function handleOutNext8(){
if(document.images)document.imgName8.src=img_offNext.src}
function handleOverPrevious8(){
if(document.images)document.imgTutor8.src=img_onPrivious.src}
function handleOutPrevious8(){
if(document.images)document.imgTutor8.src=img_offPrivious.src}