var resolucion = screen.width+"x"+screen.height;
var ancho = screen.width;
var izq = (screen.width - 600) / 2;
var arr = (screen.height - 300) / 2;
var propvent = 'height=300,width=600,top='+arr+',left='+izq+',scrollbars=No,resizable=No';
var m_superior = '';
var m_central = '';
var blanco = ' ';

//Chequeo del navegador
winIEpass = ((navigator.appName.indexOf("Microsoft") != -1) && 
  (navigator.appVersion.indexOf("Windows") != -1)) && 
  (parseFloat(navigator.appVersion) >= 4) ? true : false;

NNpass = ((navigator.appName == "Netscape") && 
  (navigator.userAgent.indexOf("Mozilla") != -1) && 
  (parseFloat(navigator.appVersion) >= 4) && 
  (navigator.javaEnabled())) ? true : false;

  supportedBrowser = (winIEpass || NNpass) ? true : false;

//Chequeo del Plug-in de Flash
minPlayer = 3;
var mySwf;

function Flash_checkForPlugIn() {
  var plugin = (navigator.mimeTypes &&
  navigator.mimeTypes["application/x-shockwave-flash"]) ?
  navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
  if (plugin) {
    var pluginversion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1)) 
    if(pluginversion >= minPlayer) {return true;}
  }
  return false;
}

// vbscript chequeo para windows IE
if(supportedBrowser && winIEpass) {
  document.write(
    '<script language=VBScript>' + '\n' +
    'Function Flash_checkForActiveX()' + '\n' +
    'Dim hasPlayer, playerversion' + '\n' +
    'hasPlayer = false' + '\n' +
    'playerversion = 10' + '\n' +
    'Do While playerversion >= minPlayer' + '\n' +
    'On Error Resume Next' + '\n' +
    'hasPlayer = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" & playerversion & \"\")))' + '\n' +
    'If hasPlayer = true Then Exit Do' + '\n' +
    'playerversion = playerversion - 1' + '\n' +
    'Loop' + '\n' +
    'Flash_checkForActiveX = hasPlayer' + '\n' +
    'End Function' + '\n' +
    '<\/script>'
  );
}

function tiene_Flash() {
  if(!supportedBrowser) return false;
  if(NNpass) return (Flash_checkForPlugIn());
  if(winIEpass) return (Flash_checkForActiveX());
}
var cadena = unescape(location.search);
var m=cadena.indexOf("m=");
if (m >= 0) m_central = cadena.substr(m+2,cadena.length);

function cargaMarcos(){
   if (tiene_Flash()) parent.marco_superior.location.href = 'marco_superior.html';
   else parent.marco_superior.location.href = 'marco_superior_gif.html';
   if (m_central != '') parent.marco_centro.location.href = m_central;
   else parent.marco_centro.location.href = 'marco_central.html';
}