function show_item (show_id) {
	
  var box = document.getElementById("news_box")

  var box_divs = box.getElementsByTagName("div");
  for (var tg = 0; tg< box_divs.length; tg++) {
	var tag = box_divs[tg];
	if (tag.id) {
		document.getElementById(tag.id).style.visibility="hidden";
		document.getElementById(tag.id).style.display="none";
	}
  }
  
  var box_spans = box.getElementsByTagName("span");
  for (var tg = 0; tg< box_spans.length; tg++) {
	var tag = box_spans[tg];
	if (tag.id) {
		document.getElementById(tag.id).style.color="#eee";	
	}
  }
  
  document.getElementById(show_id).style.visibility="visible";
  document.getElementById(show_id).style.display="block";
  document.getElementById("t_"+show_id).style.color="#ff9";
  prev_show_id = show_id;
}

var prev_show_id = 'item_1';
function reset_item () {
	show_item(prev_show_id);
}


function preview_item (show_id) {
	
  var box = document.getElementById("news_box")

  var box_divs = box.getElementsByTagName("div");
  for (var tg = 0; tg< box_divs.length; tg++) {
	var tag = box_divs[tg];
	if (tag.id) {
		document.getElementById(tag.id).style.visibility="hidden";
		document.getElementById(tag.id).style.display="none";
	}
  }
  
  var box_spans = box.getElementsByTagName("span");
  for (var tg = 0; tg< box_spans.length; tg++) {
	var tag = box_spans[tg];
	if (tag.id) {
		document.getElementById(tag.id).style.color="#eee";	
	}
  }
  
  document.getElementById(show_id).style.visibility="visible";
  document.getElementById(show_id).style.display="block";
  document.getElementById("t_"+show_id).style.color="#ff9";

}