var news_counter=0;
var rotatenews_interval;
var start;
function rotateNews(){
		if(news_counter < total_news_items)
		{
			selector =  "#newsitem"+news_counter; 
			selector_next =  "#newsitem"+(news_counter+1);
			$(selector).fadeOut(700);
			$(selector_next).fadeIn(1500);
			$(selector_next).css("display","inline");
			news_counter = news_counter+1;
		}
		else if(news_counter == total_news_items)
		{
			selector =  "#newsitem"+news_counter; 
			selector_next =  "#newsitem0";
			$(selector).fadeOut(700);
			$(selector_next).fadeIn(1500);
			$(selector_next).css("display","inline");
			news_counter = 0;			
		}
}
function displayNextItem()
{
	clearInterval(rotatenews_interval);
	selector =  "#newsitem"+news_counter; 
	if(news_counter < total_news_items)
	{
		selector_next =  "#newsitem"+(news_counter+1);
		news_counter = news_counter + 1;
	}
	else
	{
		selector_next =  "#newsitem0";
		news_counter = 0;
	}
	$(selector).css("display","none");
	$(selector_next).css("display","inline");
	var s = s_gi('mathmain');  
	s.linkTrackVars='prop26,events';               	
	s.linkTrackEvents='event51';
	s.prop26='News ticker';
	s.events='event51';
	s.tl(this,'o','HomePage Tabs');
}
function displayPrevItem()
{
	clearInterval(rotatenews_interval);
	selector =  "#newsitem"+news_counter; 
	if(news_counter > 0)
	{
		selector_prev =  "#newsitem"+(news_counter-1);
		news_counter = news_counter - 1;
	}
	else
	{
		selector_prev =  "#newsitem"+total_news_items;
		news_counter = total_news_items;
	}
	$(selector).css("display","none");
	$(selector_prev).css("display","inline");
	var s = s_gi('mathmain');  
	s.linkTrackVars='prop26,events';               	
	s.linkTrackEvents='event51';
	s.prop26='News ticker';
	s.events='event51';
	s.tl(this,'o','HomePage Tabs');
}
$(document).ready(function()
{	
	rotatenews_interval=self.setInterval("rotateNews()",5000);
});
$("#news_ticker_controls").mouseover(function()
{
	clearInterval(rotatenews_interval);
});
$("#news_ticker_controls").mouseout(function()
{
	rotatenews_interval=self.setInterval("rotateNews()",5000);
});
$("#previous_news_arrow").click(function()
{
	displayPrevItem();			
});
$("#next_news_arrow").click(function()
{
	displayNextItem();			
});