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