function view(label)
{ 
  if(label == "reg")
  {
    document.getElementById('entry').style.display = 'none';
    document.getElementById('reg').style.display = 'block';
  }
  if(label == "entry")
  {
    document.getElementById('entry').style.display = 'block';
    document.getElementById('reg').style.display = 'none';
  }
  if(label == "question")
  {
    document.getElementById('question').style.display = 'block';
  }
}

function hideSection(id)
{  
   section = document.getElementById('section_' + id);
   img = document.getElementById('img_' + id);
   if(section.style.display == 'none')
   {
    section.style.display = 'block';
    img.src = 'res/image/minus.png';
   }
   else
   {
    section.style.display = 'none';
    img.src = 'res/image/plus.png';
   }
}