text: frappe.ui.form.on("System Settings", "refresh", function(frm) {
  	frappe.setup_language_field(frm);
  	frappe.call({
  		method: "frappe.core.doctype.system_settings.system_settings.load",
  		callback: function(data) {
  			frappe.all_timezones = data.message.timezones;
  			frm.set_df_property("time_zone", "options", frappe.all_timezones);
  
  			$.each(data.message.defaults, function(key, val) {
  				frm.set_value(key, val);
  				sys_defaults[key] = val;
  			})
  		}
  	});
  });