var currentSBTextIndex = 1;
var totalSBTextElements = 3;

function window_load(e) {
// this function is fired when the page loaded
	// hide the extra text in the right sidebar
	document.getElementById('rightSidebarTeamText2').style.display = 'none';
	document.getElementById('rightSidebarTeamText3').style.display = 'none';
	
	// set events for elements
	setEventHandler(document.getElementById('nextText'), 'click', rightSidebarScroll_click);
	setEventHandler(document.getElementById('previousText'), 'click', rightSidebarScroll_click);
}

function rightSidebarScroll_click(e) {
	var event = e ? e : window.event;
	var button = event.target ? event.target : event.srcElement;
	
	if (button.id == 'nextText' && currentSBTextIndex != totalSBTextElements) {		
		// set the currrent sidebar text index
		++currentSBTextIndex;
		
		// hide and display necessary elements
		document.getElementById('rightSidebarTeamText' + (currentSBTextIndex - 1)).style.display = 'none';
		document.getElementById('rightSidebarTeamText' + currentSBTextIndex).style.display = 'block';		
		document.getElementById('previousText').className = '';
		if (currentSBTextIndex == totalSBTextElements) {
			document.getElementById('nextText').className = 'disabled';
		}
	}	
	else if (button.id == 'previousText' && currentSBTextIndex != 1) {
		// set the currrent sidebar text index
		--currentSBTextIndex;
		
		// hide and display necessary elements
		document.getElementById('rightSidebarTeamText' + (currentSBTextIndex + 1)).style.display = 'none';
		document.getElementById('rightSidebarTeamText' + currentSBTextIndex).style.display = 'block';		
		document.getElementById('nextText').className = '';
		if (currentSBTextIndex == 1) {
			document.getElementById('previousText').className = 'disabled';
		}
	}
}

// set page events
setEventHandler(window, 'load', window_load);