Javascript Anti Cópia

anti-copia.js

var no_copy_message="";
function killCtrlKeyCombo(e){
  var forbiddenKeys = new Array('a','c','x');
  var key;
  var isCtrl;
  if(window.event) {
key = window.event.keyCode; //IE
if(window.event.ctrlKey) isCtrl = true; else isCtrl = false;
} else {
key = e.which; //firefox
if(e.ctrlKey) isCtrl = true; else isCtrl = false;
}
//if ctrl is pressed check if other key is in forbidenKeys array
if(isCtrl) {
for(i=0; i<forbiddenKeys.length; i++) { //case-insensitive comparation
  if(forbiddenKeys[i].toLowerCase() == String.fromCharCode(key).toLowerCase()) {
    (no_copy_message);
    return false;
  }
}
}
return true;
}
function disableSelection(target) {
  if (typeof target.onselectstart!="undefined") {
    target.onselectstart = function(){
      return false;
    }
  } else if (typeof target.style.MozUserSelect!="undefined") {
    target.style.MozUserSelect="none";
  } else {
    target.onmousedown = function(){
      return false;
    }
  }
  target.style.cursor = "default";
}
function clickIE() {
  if (document.all) {
    (no_copy_message);
    return false;
  }
  return true;
}
function clickNS(e) {
  if (document.layers || (document.getElementById && !document.all)) {
    if (e.which==2 || e.which==3) {
      (no_copy_message);
      return false;
    }
  }
  return true;
}
if (document.layers) {
  document.captureEvents(Event.MOUSEDOWN);
  document.onmousedown=clickNS;
} else {
  document.onmouseup=clickNS;
  document.oncontextmenu=clickIE;
}
jQuery(document).ready(function () {
  disableSelection(document.body)
});
document.oncontextmenu = new Function("return false;");
document.onkeydown = killCtrlKeyCombo;