var defaultStep=5 
var step=defaultStep 


function scrollDivRight(id){
clearTimeout(timerDown) 
document.getElementById(id).scrollLeft+=step 
timerDown=setTimeout("scrollDivRight('"+id+"')",1)

} 

function scrollDivLeft(id){
clearTimeout(timerUp)
document.getElementById(id).scrollLeft-=step 
timerUp=setTimeout("scrollDivLeft('"+id+"')",1)
} 

timerDown="" 
timerUp="" 

function stopMe(){
clearTimeout(timerDown) 
clearTimeout(timerUp)
}

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