browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0) { roll = 'true'; }
else { roll = 'false'; }

function msover1(img,ref) { if (roll == 'true') { document.images[img].src = ref; } }
function msout1(img,ref)  { if (roll == 'true') { document.images[img].src = ref; }}

function framecheck()
{
var parentframe = 'frames.html';
if (parent.location.href == self.location.href)
{
var current = window.self.location.pathname;
window.location.replace (parentframe + '?' + current);
}
};

{
var imglist = new Array (
"on_about.gif",
"on_offer.gif",
"on_news.gif",
"on_newsletter.gif",
"on_subscribe.gif",
"on_contact.gif",
"on_main.gif"
);
var imgs = new Array();
var count;

if (document.images)
 for (count=0; count<imglist.length; count++)
  {imgs[count]=new Image(); imgs[count].src=imglist[count];}
}