function SetupOverlay(overlay, width, height)
{
	overlay.center();
	overlay.cfg.setProperty("width", width);
	overlay.cfg.setProperty("height", height);
	overlay.cfg.setProperty("fixedcenter", true);
	// To prevent IE6 from using iframe overlay
	overlay.cfg.setProperty("iframe", false);
}

function ShowOverlay(overlay)
{
	overlay.cfg.setProperty("visible", true);
}

function HideOverlay(overlay)
{
	overlay.cfg.setProperty("visible", false);
}