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("操作错误.或许是您按错了按键!"); 
			} 
	} 
	else if (document.all){ 
		if (event.keyCode==hotkey&&travel){ 
				//alert("操作错误.或许是您按错了按键!"); 
		}
	} 
} 

document.onkeydown=gogo 


//页面加载
addDOMLoadEvent = (function(){
    // create event function stack
    var load_events = [],
        load_timer,
        script,
        done,
        exec,
        old_onload,
        init = function () {
            done = true;
            // kill the timer
            clearInterval(load_timer);
            // execute each function in the stack in the order they were added
            while (exec = load_events.shift())
                exec();
            if (script) script.onreadystatechange = '';
        };
    return function (func) {
        // if the init function was already ran, just run this function now and stop
        if (done) return func();
        if (!load_events[0]) {
            // for Mozilla/Opera9
            if (document.addEventListener)
                document.addEventListener("DOMContentLoaded", init, false);
            // for Internet Explorer
            /*@cc_on @*/
            /*@if (@_win32)
                document.write("<script id=__ie_onload defer src=//0><\/scr"+"ipt>");
                script = document.getElementById("__ie_onload");
                script.onreadystatechange = function() {
                    if (this.readyState == "complete")
                        init(); // call the onload handler
                };
            /*@end @*/
            // for Safari
            if (/WebKit/i.test(navigator.userAgent)) { // sniff
                load_timer = setInterval(function() {
                    if (/loaded|complete/.test(document.readyState))
                        init(); // call the onload handler
                }, 10);
            }
            // for other browsers set the window.onload, but also execute the old window.onload
            old_onload = window.onload;
            window.onload = function() {
                init();
                if (old_onload) old_onload();
            };
        }
        load_events.push(func);
    }
})();