if (document.images) {
	homeOn= new Image();
	homeOn.src = "../img/roll/home_on.jpg";
	homeOff = new Image();
	homeOff.src = "../img/roll/home_off.jpg";
	aboutOn = new Image();
	aboutOn.src = "../img/roll/about_on.jpg";
	aboutOff = new Image();
	aboutOff.src = "../img/roll/about_off.jpg";
	wordsOn = new Image();
	wordsOn.src = "../img/roll/words_on.jpg";
	wordsOff = new Image();
	wordsOff.src = "../img/roll/words_off.jpg";
	eventsOn = new Image();
	eventsOn.src = "../img/roll/events_on.jpg";
	eventsOff = new Image();
	eventsOff.src = "../img/roll/events_off.jpg";
	groupsOn = new Image();
	groupsOn.src = "../img/roll/groups_on.jpg";
	groupsOff = new Image();
	groupsOff.src = "../img/roll/groups_off.jpg";
	oudOn = new Image();
	oudOn.src = "../img/roll/oud_on.jpg";
	oudOff = new Image();
	oudOff.src = "../img/roll/oud_off.jpg";
	mp3On = new Image();
	mp3On.src = "../img/roll/mp3_on.jpg";
	mp3Off = new Image();
	mp3Off.src = "../img/roll/mp3_off.jpg";
	friendsOn = new Image();
	friendsOn.src = "../img/roll/links_on.jpg";
	friendsOff = new Image();
	friendsOff.src = "../img/roll/links_off.jpg";
	photosOn = new Image();
	photosOn.src = "../img/roll/photos_on.jpg";
	photosOff = new Image();
	photosOff.src = "../img/roll/photos_off.jpg";
	buyOn = new Image();
	buyOn.src = "../img/roll/buy_on.jpg";
	buyOff = new Image();
	buyOff.src = "../img/roll/buy_off.jpg";
}
//function to replace the off images with on images

function activate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "On.src");
	}
}

function deactivate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "Off.src");
	}
}