Disable Copy Paste

<!-- Disable Copy Paste -->

<script>
    function check(e){
        alert(e.keyCode);
    }
    document.onkeydown = function(e) {
        if (e.ctrlKey && (e.keyCode === 67 || e.keyCode === 86 || e.keyCode === 85 || e.keyCode === 117)) {
        //Alt+c, Alt+v will also be disabled sadly.
        alert("Sorry you can't copy and paste in here");
        }
        return false;
    };
</script>

<script type='text/javascript'>
    var isCtrl = false;
    document.onkeyup=function(e){
        if(e.which == 17)
        isCtrl=false;
    }
    document.onkeydown=function(e){
        if(e.which == 17)
        isCtrl=true;
        if((e.which == 85) || (e.which == 67) &amp;&amp; isCtrl == true){
            // alert(&#8216;Keyboard shortcuts are cool!&#8217;);
            return false;
        }
    }
    var isNS = (navigator.appName == "Netscape") ? 1 : 0;
    if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
    function mischandler(){
        return false;
    }
    function mousehandler(e){
        var myevent = (isNS) ? e : event;
        var eventbutton = (isNS) ? myevent.which : myevent.button;
        if((eventbutton==2)||(eventbutton==3)) return false;
    }
    document.oncontextmenu = mischandler;
    document.onmousedown = mousehandler;
    document.onmouseup = mousehandler;
</script>