browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))
ie4 = ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 5 ))
ns4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4.5 ))

if (browser){
// main menu images



menu1on = new Image();
menu1on.src = "images/help_on.gif";
menu1off = new Image();
menu1off.src = "images/help_off.gif";

menu2on = new Image();
menu2on.src = "images/how_on.gif";
menu2off = new Image();
menu2off.src = "images/how_off.gif";

menu3on = new Image();
menu3on.src = "images/advantages_on.gif";
menu3off = new Image();
menu3off.src = "images/advantages_off.gif";

menu4on = new Image();
menu4on.src = "images/who_on.gif";
menu4off = new Image();
menu4off.src = "images/who_off.gif";

menu5on = new Image();
menu5on.src = "images/what_on.gif";
menu5off = new Image();
menu5off.src = "images/what_off.gif";

menu6on = new Image();
menu6on.src = "images/spacer.gif";
menu6off = new Image();
menu6off.src = "images/spacer.gif";





tn_investorson = new Image();
tn_investorson.src = "images/tn_investors_on.gif";
tn_investorsoff = new Image();
tn_investorsoff.src = "images/tn_investors_off.gif";

tn_patientson = new Image();
tn_patientson.src = "images/tn_patients_on.gif";
tn_patientsoff = new Image();
tn_patientsoff.src = "images/tn_patients_off.gif";

tn_careerson = new Image();
tn_careerson.src = "images/tn_careers_on.gif";
tn_careersoff = new Image();
tn_careersoff.src = "images/tn_careers_off.gif";

tn_mediaon = new Image();
tn_mediaon.src = "images/tn_media_on.gif";
tn_mediaoff = new Image();
tn_mediaoff.src = "images/tn_media_off.gif";

homeon = new Image();
homeon.src = "images/home_on.gif";
homeoff = new Image();
homeoff.src = "images/home_off.gif";

contacton = new Image();
contacton.src = "images/contact_on.gif";
contactoff = new Image();
contactoff.src = "images/contact_off.gif";

product_linkson = new Image();
product_linkson.src = "images/product_links_on.gif";
product_linksoff = new Image();
product_linksoff.src = "images/product_links_off.gif";

sitemapon = new Image();
sitemapon.src = "images/sitemap_on.gif";
sitemapoff = new Image();
sitemapoff.src = "images/sitemap_off.gif";

searchon = new Image();
searchon.src = "images/search_on.gif";
searchoff = new Image();
searchoff.src = "images/search_off.gif";

goon = new Image();
goon.src = "images/go_on.gif";
gooff = new Image();
gooff.src = "images/go_off.gif";

//
}