// JavaScript Document
var px = 5;
var timer; 
function scrollDiv(direc,layer){ 
clearTimeout(timer); 
d=document.getElementById(layer);
y=d.scrollTop; 
if(direc==1)y-=px; 
if(direc==2)y+=px; 
if(y<=d.scrollHeight-d.offsetHeight+px&&y>=0-px){ 
d.scrollTop=y; 
timer=setTimeout("scrollDiv("+direc+",'"+layer+"')",50);
} 
if(y<0||y>d.scrollHeight-d.offsetHeight){ 
clearTimeout(timer); 
} 
}