function show(element) {
  if(document.getElementById(element).style.display == 'none'){
    document.getElementById(element).style.display = 'block';
    document.getElementById('login_box').style.display = 'block';
    } else {
    document.getElementById(element).style.display = 'none';
    document.getElementById('login_box').style.display = 'none';
    }
  }
function filter(element,filter,text1,text2) {
  if(document.getElementById(element).style.display == 'none'){
    if(text1 && text2) document.getElementById(filter).innerHTML='<strong>'+text2+'</strong>';
    document.getElementById(element).style.display = 'block';
    } else {
      document.getElementById(element).style.display = 'none';
      if(text1 && text2) document.getElementById(filter).innerHTML='<strong>'+text1+'</strong>';
      }
  }