function check_form(formData, jqForm, options){
  	var b = jqForm.valid();
  	return b;
  }
  
  function submit_to_paypal(responseText, statusText){
  	if (responseText == '') {
  		$("#paypalForm").submit();
	}
  }
  
  function get_jquery_checkout_form_option(){
  	return { 
        target:        '#output1',   // target element(s) to be updated with server response 
        beforeSubmit:  check_form,  // pre-submit callback 
        success:       submit_to_paypal  // post-submit callback 
 
        // other available options: 
        //url:       url         // override for form's 'action' attribute 
        //type:      type        // 'get' or 'post', override for form's 'method' attribute 
        //dataType:  null        // 'xml', 'script', or 'json' (expected server response type) 
        //clearForm: true        // clear all form fields after successful submit 
        //resetForm: true        // reset the form after successful submit 
 
        // $.ajax options can be used here too, for example: 
        //timeout:   3000 
    }; 
  }