function click(e) {
if (document.all) {
     if (event.button==1||event.button==2||event.button==3) {
      oncontextmenu='return false';
     }
}
if (document.layers) {
     if (e.which == 3) {
      oncontextmenu='return false';
     }
}
}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = new Function("return false;")



var travel=true
var hotkey=17      /* hotkey即为热键的键值,是ASII码,这里99代表c键 */
if (document.layers)
document.captureEvents(Event.KEYDOWN)
function gogo(e)
{ if (document.layers) {
if (e.which==hotkey&&travel){
alert("不能使用右键功能或许是您按错了按键!!");     } }
else if (document.all){
if (event.keyCode==hotkey&&travel){ alert("不能使用右键功能或许是您按错了按键!"); }}
}



document.onkeydown=gogo