/********************************************************/
//禁止右键功能
/********************************************************/
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