Works great thanks,

I just changed the css file so the prev and next images show without the need to hover.

Removed #lbPrevLink:hover and #lbNextLink:hover and moved the call to images into #lbPrevLink and #lbNextLink like so.....

#lbPrevLink {
left: 0;
background: transparent url(../images/zen_lightbox/prevlabel.gif) no-repeat 0 15%;
}

#lbNextLink {
right: 0;
background: transparent url(../images/zen_lightbox/nextlabel.gif) no-repeat 100% 15%;
}