title: jqueryui dialog positioning
body: <p>I am using JQuery UI and would like to position my dialog horizontally centered but vertically above center, maybe by a fixed amount of pixels or a relative distance from the top of the page. Is there an easy way to do this? It looks like there are just a couple pre-defined values or I can use an exact position but is there an easy way to accomplish this?  </p>
  
  <pre><code> $("#dialog-form").dialog({
                  autoOpen: false,
                  width: 630,
                  position: 'center',
                  modal: true,
                  resizable: false,
                  closeOnEscape: false
  
              });
  </code></pre>