/* JavaScript by PRODOK Engineering, http://www.prodok.ch
for Wise-women. 
Simple browser detect and rollover for Netscape 4, IE 5 and Netscape 6/Mozilla. 
Roll 'em cowboy! 
*/

n4 = (document.layers) ? 1:0;
ie4 = (document.all) ? 1:0;

var n6 = 0;
if (n4 == 1) {n6 = 0}
else {
    if (navigator.userAgent.indexOf("MSIE 4") != -1) {n6 = 0;}
    else if (navigator.userAgent.indexOf("Windows") != -1) {n6 = 0;}
    else  {
        if (document.getElementsByTagName("*"))
        {n6 = 1;}
     }
}

if (n4) {doc = "document.";}
if (ie4) {doc = "document.all.";}
if (n6) {doc = "document.getElementsByTagName('*').";}


//preload images
navdir = "/images/nav/";
var loaded = false;
function preload() {
if (document.images) {
top_off = new Image;
top_off.src = navdir+'top.gif';
top_on = new Image;
top_on.src = navdir+'top-on.gif';


about_off = new Image;
about_off.src = navdir+'about.gif';
about_on = new Image;
about_on.src = navdir+'about-on.gif';

features_off = new Image;
features_off.src = navdir+'features.gif';
features_on = new Image;
features_on.src = navdir+'features-on.gif';

tutorials_off = new Image;
tutorials_off.src = navdir+'tutorials.gif';
tutorials_on = new Image;
tutorials_on.src = navdir+'tutorials-on.gif';

resources_off = new Image;
resources_off.src = navdir+'resources.gif';
resources_on = new Image;
resources_on.src = navdir+'resources-on.gif';

interact_off = new Image;
interact_off.src = navdir+'interact.gif';
interact_on = new Image;
interact_on.src = navdir+'interact-on.gif';

members_off = new Image;
members_off.src = navdir+'members.gif';
members_on = new Image;
members_on.src = navdir+'members-on.gif';

search_off = new Image;
search_off.src = navdir+'search.gif';
search_on = new Image;
search_on.src = navdir+'search-on.gif';

home_off = new Image;
home_off.src = navdir+'home.gif';
home_on = new Image;
home_on.src = navdir+'home-on.gif';

back_off = new Image;
back_off.src = navdir+'back.gif';
back_on = new Image;
back_on.src = navdir+'back-on.gif';


arrow_off = new Image;
arrow_off.src = navdir+"arrow-r-green.gif";

arrow_on = new Image;
arrow_on.src = navdir+"arrow-r-blue.gif";


loaded = true;
}
}

preload();


function rollit(button,state) {
if (loaded == true) {
source = eval(doc + button);
newpic = eval(button + '_'+ state);
source.src = newpic.src;
  }
}