function abreJanela(endereco, nomejanela, width, height){
  strHelpOptions =  "location=no";
  strHelpOptions += ",toolbar=no";
  strHelpOptions += ",titlebar=no";
  strHelpOptions += ",menubar=no";
  strHelpOptions += ",status=no";
  strHelpOptions += ",scrollbars=yes";
  strHelpOptions += ",resizable=1";
  strHelpOptions += ",top=";
  strHelpOptions += 0;
  strHelpOptions += ",left=";
  strHelpOptions += (screen.availWidth  / 2)-(width  / 2);
  strHelpOptions += ",width=" + width;
  strHelpOptions += ",height="+ height;
  Janela = window.open(endereco, nomejanela, strHelpOptions);
  Janela.focus();
}
function AbreJanela(endereco, nomejanela, width, height){
  strHelpOptions =  "location=no";
  strHelpOptions += ",toolbar=no";
  strHelpOptions += ",titlebar=no";
  strHelpOptions += ",menubar=no";
  strHelpOptions += ",status=no";
  strHelpOptions += ",scrollbars=yes";
  strHelpOptions += ",resizable=1";
  strHelpOptions += ",top=";
  strHelpOptions += (screen.availHeight / 2)-(height / 2);
  strHelpOptions += ",left=";
  strHelpOptions += (screen.availWidth  / 2)-(width  / 2);
  strHelpOptions += ",width=" + width;
  strHelpOptions += ",height="+ height;
  Janela = window.open(endereco, nomejanela, strHelpOptions);
  Janela.focus();
}