function ChangeMedia(to, from){
		var from_el = document.getElementById(from);
		var to_el = document.getElementById(to);
		if (to_el.className== 'nbm_b_active'){
			return false;
		}
		from_el.className = 'nbm_b_not_active';
		to_el.className = 'nbm_b_active';
		
		document.getElementById(from+'_content').className='not_active_content';
		document.getElementById(to+'_content').className='active_content_nbm2';
		return false;
	}
	
	function ChangeMediaIndex(to, from){
		var from_el = document.getElementById(from);
		var to_el = document.getElementById(to);
		if (to_el.className== 'phv_b_active'){
			return false;
		}
		from_el.className = 'phv_b_not_active';
		to_el.className = 'phv_b_active';
		
		document.getElementById(from+'_content').className='not_active_content';
		document.getElementById(to+'_content').className='active_content_phv';
		return false;
	}
	
	function ChangeNewsIndex(to, from){
		var from_el = document.getElementById(from);
		var to_el = document.getElementById(to);
		if (to_el.className== 'nbm_b_active'){
			return false;
		}
		from_el.className = 'nbm_b_not_active';
		to_el.className = 'nbm_b_active';
		
		document.getElementById(from+'_content').className='not_active_content';
		document.getElementById(to+'_content').className='active_content_nbm';
		return false;
	}