function showTimer() {
  var time=new Date();
  var hour=time.getHours();
  var minute=time.getMinutes();
  var second=time.getSeconds();
  if(hour<10)   hour  ="0"+hour;
  if(minute<10) minute="0"+minute;
  if(second<10) second="0"+second;
  var st=hour+":"+minute+":"+second;
  document.getElementById("timer").innerHTML=st;
 }
 function initTimer() {
  // O metodo nativo setInterval executa uma determinada funcao em um determinado tempo
  setInterval(showTimer,1000);
 }
function abrir(URL) {
   var width = 700;
   var height = 535;
   var left = 0;
   var top = 5;
   window.open(URL,'Balcão', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=no, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no');
}
function abrir2(URL) {
   var width = 850;
   var height = 550;
   var left = 50;
   var top = 5;
   window.open(URL,'Balcão', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=yes, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no');
}
function abrir3(URL) {
   var width = 800;
   var height = 600;
   var left = 100;
   var top = 5;
   window.open(URL,'Balcão', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=yes, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=yes, fullscreen=no');
}
function abrir4(URL) {
   var width = 500;
   var height = 460;
   var left = 100;
   var top = 5;
   jan4 = open(URL,'Balcão', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=no, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no');
   jan4.focus()
}
function abrir5(URL) {
   var width = 100;
   var height = 100;
   var left = 100;
   var top = 5;
   jan5 = open(URL,'Balcão', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=no, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no');
   jan5.focus()
}