var c=0
var s
function photoGallery()
{
if (c%4==0){
document.getElementById('photo-gallery').src = "img/rotate/index_rotate1.jpg";
}
if (c%4==1){
document.getElementById('photo-gallery').src = "img/rotate/index_rotate2.jpg";
}
if (c%4==2){
document.getElementById('photo-gallery').src = "img/rotate/index_rotate3.jpg";
}
if (c%4==3){
document.getElementById('photo-gallery').src = "img/rotate/index_rotate3.jpg";
}
c=c+1
s=setTimeout("photoGallery()",1500)
}