I have the thumbnail images on website which enlarges on mouseover.
Could someone tell me where exactly do i place height and width within this file (the enlarged image)

Somewhere here I suspect but not quite sure the exact place gif", "", {

The size I want to put in is 610 wide and 407 height.

ddimgtooltip.js

tooltips[4]=["vsdpics/mapclee.gif", "", {background:"#FFFFFF", color:"black", border:"5px ridge darkblue"}]

Thanks for any help

This should help.
http://progrower.coffeecup.com/picsmouseover.html