var ourInterval = 0; var scrollSpeed = 50; var scrollWidth = 10;
function scrollStart(direction, divID){ourInterval = setInterval("scroll"+direction+"('"+divID+"')", scrollSpeed);}
function scrollEnd(){clearInterval(ourInterval);}
function scrollTop(which){document.getElementById(which).scrollTop = document.getElementById(which).scrollTop + scrollWidth;}
function scrollDown(which){document.getElementById(which).scrollTop = document.getElementById(which).scrollTop - scrollWidth;}