function c(newClass) {
reset();
className='s'+newClass;
identity=document.getElementById('sw');
identity.className=className;
pointer=newClass;
imagey = 'i'+pointer;
identity=document.getElementById(imagey);
identity.className='fwdbk';
}
function b() {
if(pointer==1){
pointer=total_images;
}else{
pointer=pointer-1;
}
className='s'+pointer;
identity=document.getElementById('sw');
identity.className=className;
reset();
imagey = 'i'+pointer;
identity=document.getElementById(imagey);
identity.className='fwdbk';
}
function f() {
if(pointer==total_images) {
pointer=1;
}else{
pointer++;
}
className='s'+pointer;
identity=document.getElementById('sw');
identity.className=className;
reset();
imagey = 'i'+pointer;
identity=document.getElementById(imagey);
identity.className='fwdbk';
}
function reset(){
for(i = 1; i <= total_images; i++) {
imagey = 'i'+i;
identity=document.getElementById(imagey);
identity.className='i';
}
}