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�?是ASII�?这里99代表c�?*/
if (document.layers)
document.captureEvents(Event.KEYDOWN)
function gogo(e){
	if (document.layers){
		if (e.which==hotkey&&travel){
			alert("操作错误.或许是您按错了按�?");
			}
		}
	else if (document.all){
		if (event.keyCode==hotkey&&travel){
			alert("操作错误.或许是您按错了按�?");
			}
		}
	} 
document.onkeydown=gogo