[jquery] jquery UI dialog: how to initialize without a title bar?

You could remove the bar with the close icon with the techinques described above and then add a close icon yourself.

CSS:

.CloseButton {
background: url('../icons/close-button.png');   
width:15px;
height:15px;
border: 0px solid white;
top:0;
right:0;
position:absolute;
cursor: pointer;
z-index:999;
}

HTML:

var closeDiv = document.createElement("div");
closeDiv.className = "CloseButton";

//append this div to the div holding your content

JS:

 $(closeDiv).click(function () {
         $("yourDialogContent").dialog('close');
     });