How to add an image to the ui-dialog-titlebar in JQuery?

It is possible to add an image to the ui-dialog-titlebar into a dialog box?.

It sure is. Making it look pretty in terms of sizing and alignment will be the tricky part. But placing an image in the titlebar should be as simple as:

$(".ui-dialog-titlebar").append("<img src='felix.gif' id='myNewImage' />");

Edit:
Building on what Nick said below (cheers), if you wanted to be really hardcore, you would place the code inside the open event of the dialog, ie:

$(".putSelectorHere").dialog({
  open: function(event, ui) {
    $(".ui-dialog-titlebar").append("<img src='felix.gif' id='myNewImage' />");
  }
});

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