lib_cmn = {
  // Utils functions
  hasProperty: function(obj, propName) {
    /* Checks if an object has a property with given name */
      if ( (obj == null) || (!propName) ) 
        return false;
      else if (obj.hasOwnProperty('propName') || propName in obj)
        return true;
      else
        return false;
  },

  // Go to default page
  goToDefaultPage: function() {
    const baseUri = conf['adminTool']['baseUri'];
    sessionStorage.setItem('activeTab', '#link-pairing');
    window.location = baseUri + '/tool/';
  },

  // Go to home page
  goToHomePage: function() {
    sessionStorage.setItem('activeTab', null);
    window.location = conf['adminTool']['baseUri'] + '/';
  },

  // Loads html snippet
  includeHTML: function(cb) {
    let self = this;
    let z, i, elmnt, file, xhttp;
    z = document.getElementsByTagName('*');
    for (i = 0; i < z.length; i++) {
      elmnt = z[i];
      file = elmnt.getAttribute('include-html');
      if (file) {
        xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
          if (this.readyState == 4 && this.status == 200) {
            elmnt.innerHTML = this.responseText;
            elmnt.removeAttribute('include-html');
            self.includeHTML(cb);
          }
        }      
        xhttp.open('GET', file, true);
        xhttp.send();
        return;
      }
    }
    if (cb) cb();
  }

}