$(document).ready(function() { 
      var options = { 
      target:        '#alert',
      beforeSubmit:  showRequest,
      success:       showResponse
      }; 
      $('#contactForm').ajaxForm(options); 
      }); 
      function showRequest(formData, jqForm, options) { 
      var queryString = $.param(formData); 
      return true; 
      } 
      function showResponse(responseText, statusText)  {  
      } 
      $.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;
        });
      };