try {
  document.execCommand("BackgroundImageCache", false, true);
} catch(err) {}

function changeNav(selected, hovered) {

	eval('document.getElementById(\'primaryNav\').style.backgroundImage = \'url("/images/nav_' + selected + hovered + '.gif")\';');
	
}

function changeFrNav(selected, hovered) {

	eval('document.getElementById(\'primaryNav\').style.backgroundImage = \'url("/images/navfr_' + selected + hovered + '.gif")\';');
	
}