This is How it can be done.
Go to themes folder--> base--> open jquery.ui.dialog.css
Find
Followings
if you don't want to display titleBar then simply set display:none as i did in the following.
.ui dialog.ui-dialog .ui-dialog-titlebar
{
padding: .4em 1em;
position: relative;
display:none;
}
Samilarly for title as well.
.ui-dialog .ui-dialog-title {
float: left;
margin: .1em 0;
white-space: nowrap;
width: 90%;
overflow: hidden;
text-overflow: ellipsis;
display:none;
}
Now comes close button you can also set it none or you can set its
.ui-dialog .ui-dialog-titlebar-close {
position: absolute;
right: .3em;
top: 50%;
width: 21px;
margin: -10px 0 0 0;
padding: 1px;
height: 20px;
display:none;
}
I did lots of search but nothing then i got this idea in my mind. However this will effect entire application to don't have close button,title bar for dialog but you can overcome this as well by using jquery and adding and setting css via jquery
here is syntax for this
$(".specificclass").css({display:normal})