function window.onhelp()//屏蔽F1帮助
{
return false;
}
function document.onkeydown()
{
if
((window.event.altKey && window.event.keyCode == 37) //屏蔽 Alt+ 方向键 ←
|| (window.event.altKey && window.event.keyCode == 39)//屏蔽 Alt+ 方向键 →
|| (window.event.ctrlKey && window.event.keyCode == 78)//CtrlN
|| (window.event.ctrlKey && window.event.keyCode == 82)//CtrlR
|| (window.event.keyCode == 116)//屏蔽 F5
)
{
window.event.keyCode = 0;
window.event.returnvalue = false;
return false;
}
}