if(document.images){
news_on = new Image();
news_on.src = "/gphx/menu/news_on.gif"
news_off = new Image();
news_off.src = "/gphx/menu/news_off.gif"
news_hvr = new Image();
news_hvr.src = "/gphx/menu/news_hvr.gif"
tour_on = new Image();
tour_on.src = "/gphx/menu/tour_on.gif"
tour_off = new Image();
tour_off.src = "/gphx/menu/tour_off.gif"
tour_hvr = new Image();
tour_hvr.src = "/gphx/menu/tour_hvr.gif"
albums_on = new Image();
albums_on.src = "/gphx/menu/albums_on.gif"
albums_off = new Image();
albums_off.src = "/gphx/menu/albums_off.gif"
albums_hvr = new Image();
albums_hvr.src = "/gphx/menu/albums_hvr.gif"
press_on = new Image();
press_on.src = "/gphx/menu/press_on.gif"
press_off = new Image();
press_off.src = "/gphx/menu/press_off.gif"
press_hvr = new Image();
press_hvr.src = "/gphx/menu/press_hvr.gif"
image_on = new Image();
image_on.src = "/gphx/menu/image_on.gif"
image_off = new Image();
image_off.src = "/gphx/menu/image_off.gif"
image_hvr = new Image();
image_hvr.src = "/gphx/menu/image_hvr.gif"
sound_on = new Image();
sound_on.src = "/gphx/menu/sound_on.gif"
sound_off = new Image();
sound_off.src = "/gphx/menu/sound_off.gif"
sound_hvr = new Image();
sound_hvr.src = "/gphx/menu/sound_hvr.gif"
link_on = new Image();
link_on.src = "/gphx/menu/link_on.gif"
link_off = new Image();
link_off.src = "/gphx/menu/link_off.gif"
link_hvr = new Image();
link_hvr.src = "/gphx/menu/link_hvr.gif"
diary_on = new Image();
diary_on.src = "/gphx/menu/diary_on.gif"
diary_off = new Image();
diary_off.src = "/gphx/menu/diary_off.gif"
diary_hvr = new Image();
diary_hvr.src = "/gphx/menu/diary_hvr.gif"
contact_on = new Image();
contact_on.src = "/gphx/menu/contact_on.gif"
contact_off = new Image();
contact_off.src = "/gphx/menu/contact_off.gif"
contact_hvr = new Image();
contact_hvr.src = "/gphx/menu/contact_hvr.gif"
}

function button_off( buttonname, state )
{
	if (document.images) {
	document[ buttonname ].src = eval( buttonname + state + ".src" );
	}
}

function button_on ( buttonname )
{
	if (document.images) {
	document[ buttonname ].src = eval( buttonname + "_hvr.src" );
	}
}