var buttons = new Array(12);
buttons['btn-home-over'] = new Image(159,55);
buttons['btn-home-over'].src = modroot+"img/btn-home-over.gif";
buttons['btn-home-out'] = new Image(159,55);
buttons['btn-home-out'].src = modroot+"img/btn-home-out.gif";

buttons['btn-diveguide-over'] = new Image(158,55);
buttons['btn-diveguide-over'].src = modroot+"img/btn-diveguide-over.gif";
buttons['btn-diveguide-out'] = new Image(158,55);
buttons['btn-diveguide-out'].src = modroot+"img/btn-diveguide-out.gif";

buttons['btn-gearshop-over'] = new Image(158,55);
buttons['btn-gearshop-over'].src = modroot+"img/btn-gearshop-over.gif";
buttons['btn-gearshop-out'] = new Image(158,55);
buttons['btn-gearshop-out'].src = modroot+"img/btn-gearshop-out.gif";

buttons['btn-community-over'] = new Image(158,55);
buttons['btn-community-over'].src = modroot+"img/btn-community-over.gif";
buttons['btn-community-out'] = new Image(158,55);
buttons['btn-community-out'].src = modroot+"img/btn-community-out.gif";

buttons['btn-aboutus-over'] = new Image(158,55);
buttons['btn-aboutus-over'].src = modroot+"img/btn-aboutus-over.gif";
buttons['btn-aboutus-out'] = new Image(158,55);
buttons['btn-aboutus-out'].src = modroot+"img/btn-aboutus-out.gif";

buttons['btn-faq-over'] = new Image(159,55);
buttons['btn-faq-over'].src = modroot+"img/btn-faq-over.gif";
buttons['btn-faq-out'] = new Image(159,55);
buttons['btn-faq-out'].src = modroot+"img/btn-faq-out.gif";

function swap(id,state) {
	img = document.getElementById(id);
	img.src = buttons[id+'-'+state].src;
}
function over(id) {
	swap(id,'over');
}
function out(id) {
	swap(id,'out');
}