// this stores currently active menu button
var activeId = "";

function rollover(imageId, type) {

	var image = getRawObject(imageId);
	
	if (type == "hover") {
		if (imageId != activeId) {
			image.src = buttonHover[imageId].src;
		}
		return true;
	}
	else if (type == "normal") {
		if (imageId != activeId) {
			image.src = buttonNormal[imageId].src;
		}
		return true;
	}
	else if (type == "active") {
		if (activeId && (imageId != activeId)) {
			var active_img = getRawObject(activeId);
			active_img.src = buttonNormal[activeId].src;
		}
		image.src = buttonHover[imageId].src;
		activeId = imageId;
		return true; 
	}
	else
		return true;
}



// Special handling for CSS-P redraw bug in Navigator 4
function handleResize() {
    if (isNN4) {
        // causes extra re-draw, but gotta do it to get banner object color drawn
        location.reload();
    } else {
        centerX("main", 20);
    }
}

// note that element to be centered has to be called
// "main" in order for following handle to work
window.onresize = handleResize;