$('#fm-login').submit(function(e){
  e.preventDefault();
  
  $('#fm-login').form('submit',{
    url: 'https://ckr-firmi.uni-ruse.bg/index.php?cmd=998010019890106199719900947010709940104110619861997199401111990098419861997110619980999199400110&action=login_do&ajax_request=true',
    onSubmit: function(){
      return $(this).form('validate');
    },
    success: function(result){
      var result=eval('('+result+')');
      
      if(result.error){
        $.messager.show({
          title: 'Грешка',
          msg: result.error
        });
        return;
      }
        
      location.reload(); 
    }
  });
});