var x,y
var step=15
var flag=0
var mymessage = "Sorry, you cannot edit or view the source.  CDoc Infotech Pvt. Ltd.";

function rtclickcheck(keyp){
  if (navigator.appName == "Netscape" && keyp.which == 3) {
    alert(mymessage);
    return false;
  }

  if (navigator.appVersion.indexOf("MSIE") != -1 && event.button == 2) {
    alert(mymessage);
    return false;
  }
}
document.onmousedown = rtclickcheck