Possibly . . . The use of a z-index (as opposed to x & y coordinates
'indices') relates to the 'stacking' order of layers. A z-index value of 500 is
'closer' to the viewer than a z-index of 400. For example: <li z-index='500'>
can be written into your code, item by item, with differing values for
differing looks. 2 is closer to the viewer than 1 &amp; 500 is closer to the
viewer than 400, but there is no difference as far as 'distance'. '500' is as
far away from '1' as '2' is, if those are the only DIV's (layers) values you
are referencing . . . I'm not familiar with frames - they've been shunned by my
mentors. And, I may not be their best student . . .