[jQuery] Morph between 2 classes

[pixeline]

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