// JScript 文件
function $(id)
{
  return document.getElementById(id);
}

function showtree(topicid){
	var imgsrcCol = "/channel/ghrx/images/no-sublist.gif";
	var imgsrcExp = "/channel/ghrx/images/topItem_exp.gif";
	
	var divTopic = $("divTopic" + topicid);
	if ($("imgButton_" + topicid).src.indexOf(imgsrcCol)!=-1){	
		$("imgButton_" + topicid).src = imgsrcExp;
		$("imgButton_" + topicid).alt = "展开帖子列表";
		$("imgButton_" + topicid).title = "展开帖子列表";

		$("divTopic" + topicid).style.display = "none";
	}
	else{
		$("imgButton_" + topicid).src = imgsrcCol;
		$("imgButton_" + topicid).alt = "关闭帖子列表";
		$("imgButton_" + topicid).title = "关闭帖子列表";
		if ($("divTopic" + topicid)){
			$("divTopic" + topicid).style.display = "";
		}
	}
	
}