//toggles css display attribute -> shows/hides submenu
  function show_person(number){
    
    if(document.getElementById('person_' + number)) {
      var obj = document.getElementById('person_' + number);
	  var img = document.getElementById('person_pic_' + number);
      if(obj.style.display != 'block'){
        hideAll();
        obj.style.display = 'block';
		img.style.display = 'block';
      }
      else 
      return true;
    }
      
    
  }
  //sets all css display attributes to 'none' -> hides all submenus
  function hideAll(){
    for(i = 1; i <= 15; i++) {
      if(document.getElementById('person_' + i)) {
        document.getElementById('person_' + i).style.display = 'none';
		document.getElementById('person_pic_' + i).style.display = 'none';
      }
    }
    return true;
  }


//ATL_BTL

  function show_dela(number){
	var browser = navigator.appName;      
    if(document.getElementById('tr_' + number)) {
      var tr = document.getElementById('tr_' + number);
	  var p = document.getElementById('p_' + number);
	  var p2 = document.getElementById('p2_' + number);
	  
      if(tr.style.display != 'block' && p.style.display != 'block' && p2.style.display != 'block'){
        hideAlldela();
		if (browser == 'Microsoft Internet Explorer') {
			tr.style.display = 'inline';		
		} else {
			tr.style.display = 'table-row';
		}
		//tr.style.visibility = 'visible';
		p.style.display = 'block';
		p2.style.display = 'block';
      }
      else 
      return true;
    }
      
    
  }

  function hideAlldela(){
    for(i = 1; i <= 23; i++) {
      if(document.getElementById('tr_' + i)) {        
		document.getElementById('tr_' + i).style.display = 'none';		
		//document.getElementById('tr_' + i).style.visibility = 'collapse';
		document.getElementById('p_' + i).style.display = 'none';
		document.getElementById('p2_' + i).style.display = 'none';
      }
    }
    return true;
  }