var imageOn = new Array();
var imageOff = new Array();
var imageDirectory;


function initRollovers() {
	if (document.images) {
		for (var i = 0; i < imageOnFiles.length; i++) {
			currentName = imageTagNames[i];
			imageOff[currentName] = new Image();
			imageOn[currentName] = new Image();
			imageOff[currentName].src = imageDirectory + imageOffFiles[i];
			imageOn[currentName].src = imageDirectory + imageOnFiles[i];
		}
	}
	
	is = new BrowserDetect();
}

function rollon(img, layername) {
	if (layername) layername = getElement(layername);
	if (document.images && imageOn[img]) {
		if ((layername)&&(!is.isNS5up)) {
			if (layername.document.images[img]) layername.document.images[img].src = imageOn[img].src;
		} else document.images[img].src = imageOn[img].src;
	}
}

function rolloff(img, layername) {
	if (layername) layername = getElement(layername);
	if (document.images && imageOff[img]) {
		if ((layername)&&(!is.isNS5up)) {
			if (layername.document.images[img]) layername.document.images[img].src = imageOff[img].src;
		} else document.images[img].src = imageOff[img].src;
	}
}