var photo=new Array()
var num=0
photo[0]="images/magic01.jpg"
photo[1]="images/magic02.jpg"
photo[2]="images/magic03.jpg"
photo[3]="images/magic04.jpg"
photo[4]="images/magic05.jpg"
photo[5]="images/magic06.jpg"
photo[6]="images/magic07.jpg"
photo[7]="images/magic08.jpg"
photo[8]="images/magic09.jpg"
photo[9]="images/magic10.jpg"
photo[10]="images/magic11.jpg"
photo[11]="images/magic12.jpg"
photo[12]="images/magic13.jpg"
photo[13]="images/magic14.jpg"
photo[14]="images/magic15.jpg"
photo[15]="images/magic16.jpg"
photo[16]="images/magic17.jpg"
photo[17]="images/magic18.jpg"
photo[18]="images/magic19.jpg"
photo[19]="images/magic20.jpg"
photo[20]="images/magic21.jpg"
photo[21]="images/magic22.jpg"
photo[22]="images/magic23.jpg"
photo[23]="images/magic24.jpg"
photo[24]="images/magic25.jpg"
numero=num+1

function precedente() {
  if (num>0) {
    num--
      document.image.src=photo[num];
    numero=num+1
  }
}
function suivante() {
  if(num<photo.length-1) {
    num++
      document.image.src=photo[num];
    numero=num+1
  }
}