var KeySequence = '38384040373937396665';
var KeysPressed = '';
var counter = 0;

document.onkeyup = KeyPress;

function KeyPress(e)
 {
  var KeyID = (window.event) ? event.keyCode : e.keyCode;
  switch(KeyID)
   {
    case 38:
     KeysPressed = KeysPressed + '38';
     counter = counter + 1;
     break;
    case 40:
     KeysPressed = KeysPressed + '40';
     counter = counter + 1;
     break;
    case 37:
     KeysPressed = KeysPressed + '37';
     counter = counter + 1;
     break;
    case 39:
     KeysPressed = KeysPressed + '39';
     counter = counter + 1;
     break;
   case 66:
     KeysPressed = KeysPressed + '66';
     counter = counter + 1;
     break;
    case 65:
     KeysPressed = KeysPressed + '65';
     counter = counter + 1;
     break;
    default:
     KeysPressed = '';
     counter = 0;
     break;
   }
   if(counter == 10)
    {
     checkSequence(KeysPressed);
    }
 }
 
function checkSequence(keys)
 {
  if(keys == KeySequence)
   {
      showKonamiModal();
   }
  KeysPressed = '';
  counter=0;
 }

function showKonamiModal()
 {
  var screenWidth = document.body.clientWidth; 
  var screenHeight = document.body.clientHeight;
    
  var modalWidth = '200px';
  modalWidth = modalWidth.replace(/px/gi,'');
    
  var modalHeight = 'auto';
  modalHeight = modalHeight.replace(/px/gi,'');
  
  var leftLoc;
  if (modalWidth == 'auto' || modalWidth == '')
   {
    leftLoc = (screenWidth/4);
    leftLoc = leftLoc + 'px';
   }
  else
   {
    leftLoc = (screenWidth - modalWidth)/2;
    leftLoc = leftLoc + 'px';
   }
  
  var topLoc;
  if (modalHeight == 'auto' || modalHeight == '')
   {
    topLoc = (screenHeight/4);
    topLoc = topLoc + 'px';
   }
  else
   {
    topLoc = (screenHeight - modalHeight)/2;
    topLoc = topLoc + 'px';
   }
  //var coverDIV = '<div id="KonamiBlackOut" style="display: block; position: absolute; background-color: black; filter: alpha(opacity=70); -moz-opacity: 0.7; opacity: 0.7; z-index: 998; top: 0px; left: 0px; height: ' + screenHeight + 'px; width: ' + screenWidth + 'px; "></div>';
  var modal = '<div id="KonamiContent" style="display: block; position: absolute; width: ' + modalWidth + '; height: ' + modalHeight + '; z-index: 999; margin: 0 auto; top: ' + topLoc + '; left: ' + leftLoc + '">';
  modal = modal + '<table cellpadding="5" cellspacing="0" width="100%" style="background-color: red; font-weight: bold; color: black; border: solid 2px black">';
  modal = modal + '<tr>';
  modal = modal + '<td align="center" colspan="2">';
  modal = modal + 'Congratulations you have entered the Konami Code!<br /><br />Press OK to learn more about this code.<br />Press Cancel to return to the page.<br />';
  modal = modal + '<img src="../Konami/NinjaDance.gif" alt="KONAMI!">'
  modal = modal + '</td>';
  modal = modal + '</tr>';
  modal = modal + '<tr>'
  modal = modal + '<td align="center">';
  modal = modal + '<br /><br />';
  modal = modal + '<input style="background-color: black; color: red; font-weight: bold;" id="btnOK" type="button" value="OK" onclick="window.open(\'http://www.google.com/#hl=en&q=konami+code&btnG=Google+Search&aq=f&oq=konami+code&fp=DwUsqvqK_ig\'); document.getElementById(\'KonamiContent\').style.display = \'none\';" />';
  modal = modal + '<br /><br />';
  modal = modal + '</td>';
  modal = modal + '<td align="center">';
  modal = modal + '<br /><br />';
  modal = modal + '<input style="background-color: black; color: red; font-weight: bold;" id="btnCancel" type="button" value="Cancel" onclick="document.getElementById(\'KonamiContent\').style.display = \'none\';" />';
  modal = modal + '<br /><br />';
  modal = modal + '</td>';
  modal = modal + '</tr>';
  modal = modal + '<tr>';
  modal = modal + '<td align="center" colspan="2">';
  modal = modal + '<img src="../Konami/code.png" alt="KONAMI!">'
  modal = modal + '</td>';
  modal = modal + '</tr>';
  modal = modal + '</table>';
  modal = modal + '</div>';
  var div = document.getElementsByTagName('div'); 
  for(var i=0; i<div.length; i++) 
	{ 
	  div[i].innerHTML = modal; //+ coverDIV;
	  break;
	} 
 }