var currentpos,timer; function initialize() {
timer=setInterval("scrollwindow()",25); } function sc(){ if (event.button==1){
clearInterval(timer); } } function scrollwindow() {
currentpos=document.body.scrollTop; window.scroll(0, currentpos); if
(currentpos != document.body.scrollTop) clearInterval(timer); }
document.onmousedown=sc document.ondblclick=initialize