document.oncontextmenu=stop;
//ܣCtrl+C
document.onkeydown = function(){
if (event.ctrlKey && window.event.keyCode==67){
alert("ҳ޷ʹCtrl+CϵͳֹƸҳϢ"); 
return false;
}
}
//ܣøƹ
document.body.oncopy = function ()
{
alert("ҳ޷ƣϵͳֹƸҳϢ"); 
return false;
}
//ܣѡȡ
document.onselectstart = function(){
alert("ҳ޷ѡȡ֣ϵͳֹƸҳϢ"); 
return false;
}