All right i was check'n out mtv.com the other day and found a really niffty design and i was wondering what they used for that design .

on the mid left side there is a small nav. table housing 4 tabs --
video ; radio ; download ; photos
and when you move the mouse over one of the tab the content below changes !!
is it just a simple swap image effect ?? or there's more to it ???

Looks to me like a swap image js

yea but you can actually click into the links

i've tried to design it using swap image but i can;t make the image contain any links

My knowledge of JS is limited but you should be able to call the onmouseover event from within an anchor tag.