function switch_news(num)
{
	var _tabs=document.getElementById('newstabs').getElementsByTagName("a");
	var l=_tabs.length;
	for(var i=1;i<=l;i++)
	{	
		var _block=new Array();
		_block[i-1]=document.getElementById("news"+i);
		if(i == num)
		{
			_tabs[i-1].className="active";
			_block[i-1].style.display="";
		}
		else
		{
			_block[i-1].style.display="none";
			_tabs[i-1].className="";
	   	}
	}
	return false;
}