toggle_soc_panel = function() {
     document.getElementById("soc-panel-link").onclick = function() {
          var l = document.getElementById("soc-login");
          var soc_panel = document.getElementById("soc-login-panel");
          if(l.className.indexOf(' on-click') === -1)
          {
               l.className += ' on-click';
               soc_panel.className += ' show-soc';
          }
          else
          {
             l.className = l.className.replace(new RegExp(" on-click\\b"), '');
             soc_panel.className = soc_panel.className.replace(new RegExp(" show-soc\\b"), '');
          }
          return false;
     };
}