function element(id){ 
  return document.getElementById(id); 
}

function showElement(id,section){
  var elementGroup = section+id;
  var elementObj = element(elementGroup);
  if(elementObj.className == 'hide'){
    elementObj.className = 'show';
  } else {
    elementObj.className = 'hide';
  }
}

function popup(target, windowname){
  var popwin = window.open(target, windowname, "height=500,width=620,toolbar=no,directories=no,location=no,status=no,scrollbars=yes,resize=yes,menubar=no");
  popwin.focus()
}