podria alguien detallarme que significa o para que es este script.
GRACIASSSSSSSSSSS.
<script language="JavaScript"><!--
browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );
version = "n2";
if ( browserName == "Netscape" && browserVer >= 3 ) version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4 ) version = "e4";
if ( version == "n3" || version == "e4" )
{
about_on = new Image ( 134, 94 );
about_on.src = "menuimages/about_on.gif";
products_on = new Image ( 72, 69 );
products_on.src = "menuimages/products_on.gif";
news_on = new Image ( 134, 70 );
news_on.src = "menuimages/news_on.gif";
links_on = new Image ( 134, 94 );
links_on.src = "menuimages/links_on.gif";
guestbook_on = new Image ( 134, 94 );
guestbook_on.src = "menuimages/guestbook_on.gif";
email_on = new Image ( 134, 70);
email_on.src = "menuimages/email_on.gif";
about_off = new Image ( 134, 94 );
about_off.src = "menuimages/about_off.gif";
products_off = new Image ( 134, 108 );
products_off.src = "menuimages/products_off.gif";
news_off = new Image ( 134, 70 );
news_off.src = "menuimages/news_off.gif";
links_off = new Image ( 134, 94 );
links_off.src = "menuimages/links_off.gif";
guestbook_off = new Image ( 134, 108 );
guestbook_off.src = "menuimages/guestbook_off.gif";
email_off = new Image ( 134, 70 );
email_off.src = "menuimages/email_off.gif";
}
function button_on ( imgName )
{
if ( version == "n3" || version == "e4" )
{
butOn = eval ( imgName + "_on.src" );
document [imgName].src = butOn;
}
}
function button_off ( imgName )
{
if ( version == "n3" || version == "e4" )
{
butOff = eval ( imgName + "_off.src" );
document [imgName].src = butOff;
}
}
// --></script>