// random image funtion //
function randomImage(imgArr)
{
  var imgSrc, r;
  r = randomNumber(imgArr.length);
  imgSrc = imgArr[r];
  document.write('<img src="lines/'+imgSrc+'" width="810" height="4" />');
}
function randomNumber(limit){
  return Math.floor(Math.random()*limit);
}
// function end //

// disable right-click function //

function disableRightClick(e)
{
  if(!document.rightClickDisabled) // initialize
  {
    if(document.layers) 
    {
      document.captureEvents(Event.MOUSEDOWN);
      document.onmousedown = disableRightClick;
    }
    else document.oncontextmenu = disableRightClick;
    return document.rightClickDisabled = true;
  }
  if(document.layers || (document.getElementById && !document.all))
  {
    if (e.which==2||e.which==3)
    {
      return false;
    }
  }
  else
  {
    return false;
  }
}

disableRightClick();
// function end //