/**
 * toggles an elements display style
 * when off the element disappears, when on it appears
 */
function toggle(elementId, state)
{
	var dispVal = 'none';
	if(state)
	{
		dispVal = 'block';
	}
	document.getElementById(elementId).style.display = dispVal;
}

/**
 * tracks events using Google Tracker.
 * @param tracker
 */
function trackPageEvent(tracker)
{
	//default does nothing to keep from having js compile errors. 
	//should be overridden in the page.
	//trackEvents(tracker, 'Checkout', 'End Checkout', 'Thank You Page');
}