/*
function getMusicToggle(output)
{
    if (parent.music.playing)
    {
        content = '<img src="assets/images/music_on.gif" border=0>';
    }
    else
    {
        content ='<img src="assets/images/music_off.gif" border=0>';
    }
    if (output)
    {
        document.write(content);
    }
    else
    {
        return content;

    }
}
function pause_music()
{
    
    dhtml = document.getElementById('musicToggle');
    if (parent.music.playing)
    {
	parent.music.playing = false;
        parent.music.soundManager.togglePause('mySound');
        dhtml.innerHTML = getMusicToggle();
    }
    else 
    {
        parent.music.playing = true;
        parent.music.soundManager.togglePause('mySound');
        dhtml.innerHTML = getMusicToggle();
    }

}
*/
function activate_nav(id) {
	var nav = document.getElementById(id);
	var src = 'assets/images/nav_'+id+'_a.gif';
	nav.src = src;
}