$(document).ready(function() { 
    var options = { 
    target:        '#alert'
    }; 
    $('#contactFormSending').ajaxForm(options); 
    }); 
    
    $.fn.clearForm = function() {
      return this.each(function() {
        var type = this.type, tag = this.tagName.toLowerCase();
        if (tag == 'form')
          return $(':input',this).clearForm();
        if (type == 'text' || type == 'password' || tag == 'textarea')
          this.value = '';
        else if (type == 'checkbox' || type == 'radio')
          this.checked = false;
        else if (tag == 'select')
          this.selectedIndex = -1;
      });
    };