x = 0;
function avanti(){
if(document.all){x = iframe1.document.body.scrollLeft;}
else{x = iframe1.window.pageXOffset;}
p1=setInterval('avant()',20);}
function avant(){
x +=10;
iframe1.window.scroll(x,0);}
function indietro(){
if(document.all){x = iframe1.document.body.scrollLeft;}
else{x = iframe1.window.pageXOffset;}
p2=setInterval('ind()',20);}
function ind(){
x -=10;
iframe1.window.scroll(x,0);}
function stopA(){clearInterval(p1);}
function stopI(){clearInterval(p2);}