$(document).ready(function() {
   $('.clear_input').click(function() {
    $(this).val('');
   });
 });

 
 function show_infotab(id)
 {
  var info_element = document.getElementById('info_' + id);
  var info_element_1 = document.getElementById('info_1');
  var info_element_2 = document.getElementById('info_2');
  
  info_element_2.style.display = 'none';
  info_element_1.style.display = 'none';
  info_element.style.display = 'block';
  
  link_1 = document.getElementById('infotab_link_1');
  link_2 = document.getElementById('infotab_link_2');
  if (id == 1)
  {
   link_1.setAttribute('class','infotab_link selected');
   link_2.setAttribute('class','infotab_link');
  }
  else if (id == 2)
  {
   link_2.setAttribute('class','infotab_link selected' );
   link_1.setAttribute('class','infotab_link');
  }
 }