$(document).ready(function() { 
	

	//navigation rollover
	$('img.newsNav').each(function () {
			
			var $$ = $(this);
			
			//Get rollover image src
			var rolloverImg = $$.attr('src');
			rolloverImg = rolloverImg.replace(".gif","-o.gif");
			rolloverImg = rolloverImg.replace(".jpg","-o.jpg");
			
			//style and prepare anchor link
			var getImgWidth = $$.attr('width');
			var getImgHeight = $$.attr('height');			
			$$.parent().css({display: 'block', width: getImgWidth + 'px', height: getImgHeight + 'px', float: 'left'});
			
			
			//add rollover to a
			$$.parent().css("background", "url(" + rolloverImg +") no-repeat left top");
			
			
			//hover setup
			$$.hover(
				function() {
				$(this).stop().animate({"opacity": "0"}, "800");
				},
				function() {
				$(this).stop().animate({"opacity": "1"}, "1500");
			});
			
		
	});
	
	
	
	//turn on the first button button
	$('#newsB').children().css({display: 'none'});

	//turn on first news section
	$('#newsC').stop().slideDown('slow');
	
	//Define Item that is open
	var openItemC = "#newsC"
	
	//Define button that is on
	var onButton = "#newsB"

	
	//Custom function to handle the display of news
	$.fn.displayNews = function(newsItem, onBtn) {

		//close item that is open
		$(openItemC).stop().slideUp('slow', function(){
				
				//slide down item
				$(newsItem).stop().slideDown('slow');
				
				//redefine open item 
				openItemC = newsItem
		});
		
		
		//turn on button
		$(this).children().css({display: 'none'});
		
		//turn off prev button
		$(onButton).children().css({display: 'block'});
		
		//redefine on button 
		onButton = onBtn
		
	};



	//Configure buttons
	$('#newsB').click(function(evt){
		
		//disable achor click
		evt.preventDefault();
		
		if( onButton != "#newsB"){
			$(this).displayNews('#newsC', '#newsB');
		}
	});
	$('#eventsB').click(function(evt){
		
		//disable achor click
		evt.preventDefault();
		
		if( onButton != "#eventsB"){
			$(this).displayNews('#eventsC','#eventsB');
		}
	});
	$('#casestudiesB').click(function(evt){
		
		//disable achor click
		evt.preventDefault();
		
		if( onButton != "#casestudiesB"){
			$(this).displayNews('#casestudiesC', '#casestudiesB');
		}
	});
	$('#whitepaperB').click(function(evt){
		
		//disable achor click
		evt.preventDefault();
		
		if( onButton != "#whitepaperB"){
			$(this).displayNews('#whitepapersC', '#whitepaperB');
		}
	});
	


});