[jQuery] Morph between 2 classes

[jQuery] Morph between 2 classes


hi!
i' m looking after a way to switch an element 's class, and have the
transition of style produce a morphing.
Example:
.class1{
border:1px solid red;
width:500px;
height:400px;
}
.class2{
border:2px solid black;
width:320px;
height:240px;
}
something like:
$('#myEl').morph('class1','class2',speed,callback);
I understood somewhere it was available in jquery UI, but is it
actually the case? I don't find anything in the doc.
Thanks !
Alexandre