if (document.images) 

{
// Images menu index.htm
imageabout = new Image(181, 132);imageabout.src = 'innerimages/about.gif';
imageabout_on = new Image(181, 132);imageabout_on.src = 'innerimages/about_on.gif';
imagescience = new Image(182, 132);imagescience.src = 'innerimages/science.gif';
imagescience_on = new Image(182, 132);imagescience_on.src = 'innerimages/science_on.gif';
imager = new Image(182, 132);imager.src = 'innerimages/r.gif';
imager_on = new Image(182, 132);imager_on.src = 'innerimages/r_on.gif';
imageclinical = new Image(182, 132);imageclinical.src = 'innerimages/clinical.gif';
imageclinical_on = new Image(182, 132);imageclinical_on.src = 'innerimages/clinical_on.gif';
imagecontract = new Image(182, 132);imagecontract.src = 'innerimages/contract.gif';
imagecontract_on = new Image(182, 132);imagecontract_on.src = 'innerimages/contract_on.gif';
imagepress = new Image(182, 132);imagepress.src = 'innerimages/press.gif';
imagepress_on = new Image(182, 132);imagepress_on.src = 'innerimages/press_on.gif';
imagecareers = new Image(182, 132);imagecareers.src = 'innerimages/careers.gif';
imagecareers_on = new Image(182, 132);imagecareers_on.src = 'innerimages/careers_on.gif';
imagelinks = new Image(182, 132);imagelinks.src = 'innerimages/links.gif';
imagelinks_on = new Image(182, 132);imagelinks_on.src = 'innerimages/links_on.gif';
imagecontact = new Image(182, 132);imagecontact.src = 'innerimages/contact.gif';
imagecontact_on = new Image(182, 132);imagecontact_on.src = 'innerimages/contact_on.gif';
imagesitemap = new Image(182, 132);imagesitemap.src = 'innerimages/sitemap.gif';
imagesitemap_on = new Image(182, 132);imagesitemap_on.src = 'innerimages/sitemap_on.gif';

} 
function Change(what,bywhat)
{
if (document.images) {document.images[what].src=eval(bywhat+".src"); }
}