function open_news(param){
	for(i=1; i<=2;i++)
	{
		current_news=document.getElementById("news_box_"+i);
		current_news.className="left_news_hidden";
	}
	current_news=document.getElementById("news_box_"+param);	
	if(current_news.className=="left_news_hidden")
		current_news.className="left_news";	
	else
		current_news.className="left_news_hidden";
}