function leftClick(){
 if(page>1 && page<=3){
  new Effect.Move('scroll-inner', { x: 780, y: 0, mode: 'relative' });
  page=page-1;
  setArrows();
 }
}

function rightClick(){
 if(page>=1 && page<3){
  new Effect.Move('scroll-inner', { x: -780, y: 0, mode: 'relative' });
  page=page+1;
  setArrows();
 }
}

function setArrows(){
 li='/assets/images/l-arrow-off.png';
 ri='/assets/images/r-arrow-off.png';
 if(page>1 && page<=max){ li='/assets/images/l-arrow-on.png'; }
 if(page>=1 && page<max){ ri='/assets/images/r-arrow-on.png'; }
 document.lr.src=li;
 document.rr.src=ri;
}

function auto(){
 if(intval==""){
  intval=window.setInterval("leftClick()",4500)
 }else{
  stop_Int()
 }
}

function stop_Int(){
 if(intval!=""){
  window.clearInterval(intval);
  intval="";
 }
}