$(document).ready(function() {
    if (window.navigator.userAgent.indexOf ("Opera") >= 0)
  {
   ua = 'Opera';
  }
else
if (window.navigator.userAgent.indexOf ("Gecko") >= 0) // (Mozilla, Netscape, FireFox)
  {
   ua = 'Mozilla';
}
else
if (window.navigator.userAgent.indexOf ("IE 6") >= 0)
  {
   ua = 'IE_6';
}
else
if (window.navigator.userAgent.indexOf ("IE 7") >= 0)
  {
   ua = 'IE_7';
}
else
   ua = window.navigator.appName;



 $("span.dialogs-mail").click(function() {
   $("div#dialogs-mail").dialog();
 });

 $("#powered_by").remove();


});