title: Jquery ui Dialog Modal True
body: <p>I am use jQuery v1.8.2 and
  jQuery UI v1.9.2.</p>
  
  <p>so My Problem is that.</p>
  
  <p>On Button click event
  i have close the dialog</p>
  
  <pre><code>$('#oldInvoiceDialogDiv').dialog('close');
  </code></pre>
  
  <p>But Modal Property Remaining </p>
  
  <p>Means after close dialog do not working like ui-widget-overlay property
  Dialog </p>
  
  <pre><code>$("#oldInvoiceDialogDiv").dialog({
          autoOpen : false,
          resizable : false,
          width : 855,
          modal : true,
          close : function(ev, ui) {
  
          }
      });
  </code></pre>
  
  <p>so What is my Fault.
  Please tell me
  Thanks in advance</p>