<!--
function disableselect(e){
return false
}

function reEnable(){
return true
}

//if IE4+
document.onselectstart=new Function ("return false")

//if NS6
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}


if (window.Event) 
  document.captureEvents(Event.MOUSEUP); 
 
function nocontextmenu() 
{
 event.cancelBubble = true
 event.returnValue = false;
 
 return false;
}
 
function norightclick(e) 
{
 if (window.Event) 
 {
  if (e.which == 2 || e.which == 3)
   return false;
 }
 else
  if (event.button == 2 || event.button == 3)
  {
   event.cancelBubble = true
   event.returnValue = false;
   return false;
  }
 
}
 
document.oncontextmenu = nocontextmenu;  //对ie5.0以上
document.onmousedown = norightclick;  //对其它浏览器
//-->


<!---

//双击鼠标滚动屏幕的代码
var currentpos,timer;
function initialize()
{
timer=setInterval ("scrollwindow ()",30);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc
document.ondblclick=initialize

 //-->