title: How change a default parameters value in jQuery function?
body: <p>I have not experience in jQuery. I use validation plugin. But I should change position of error message baloon. Here is default parameters for validation function.</p>
  
  <pre><code>    a.validationEngine = { defaults: { validationEventTrigger: "blur", scroll: true, 
      focusFirstField: true, promptPosition: "topRight", bindMethod: "bind", 
      inlineAjax: false, ajaxFormValidation: false, ajaxFormValidationURL: false, 
      onAjaxFormComplete: a.noop, onBeforeAjaxFormValidation: a.noop, 
      onValidationComplete: false, isOverflown: false, overflownDIV: "",
      binded: false, showArrow: true, isError: false,
      ajaxValidCache: {}, autoPositionUpdate: false, InvalidFields: [], 
      onSuccess: false, onFailure: false } }
  </code></pre>
  
  <p>I want to change <strong>promptPosition: "topRight"</strong> to <strong>promptPosition: "bottomLeft"</strong>.
  When I change that parameter's value at the top function, it works.</p>
  
  <p>In page I want to add <strong>promptPosition: "bottomLeft"</strong> parameter to following function. How can I do it?</p>
  
  <pre><code>&lt;script&gt;
   jQuery(document).ready(function () {
       jQuery('#userSignInForm').validationEngine('init');
          jQuery('#signInButton').click(function () {
              jQuery('#userSignInForm .loading').animate({ opacity: 1 }, 850);
              if (jQuery('#userSignInForm').validationEngine('validate')) {
                  jQuery.post('/Profile/SignIn', {
                      UserName: jQuery('#UserName').val(),
                      Password: jQuery('#Password').val(),
                      formname: 'user_SignIn_Form',
                      formtype: 'userSignInF'
                  }, function () {
                      jQuery('#userSignInForm .loading').hide();
                  });
                  return false;
              } else {
                  return false;
              }
          });
      });
  &lt;/script&gt;
  </code></pre>