var defaultStep=1; 
var step=defaultStep; 

function scrollDivDown(id){
clearTimeout(timerDown); 
document.getElementById(id).scrollTop+=step; 
timerDown=setTimeout("scrollDivDown('"+id+"')",10);

} 

function scrollDivUp(id){
clearTimeout(timerUp)
document.getElementById(id).scrollTop-=step 
timerUp=setTimeout("scrollDivUp('"+id+"')",10)
} 

function scrollDivLeft(id){
clearTimeout(timerUp)
document.getElementById(id).scrollLeft-=step 
timerUp=setTimeout("scrollDivLeft('"+id+"')",10)
} 


function scrollDivRight(id){
clearTimeout(timerUp)
document.getElementById(id).scrollLeft+=step 
timerUp=setTimeout("scrollDivRight('"+id+"')",10)
} 

timerDown=""; 
timerUp="";
timerLeft="";
timerRight="";

function stopMe(){
clearTimeout(timerDown); 
clearTimeout(timerUp);
clearTimeout(timerLeft);
clearTimeout(timerRight);
}

// document.onmousemove=function(){stopMe()}