function selectTag(showContent,selfObj){
			// 操作标签
			var tag = document.getElementById("tags").getElementsByTagName("li");
			var taglength = tag.length;
			for(i=0; i<taglength; i++){
				tag[i].className = "";
			}
			selfObj.parentNode.className = "selectTag";
			// 操作内容
			for(i=0; j=document.getElementById("tagContent"+i); i++){
				j.style.display = "none";
			}
			document.getElementById(showContent).style.display = "block";
			
			
		}




//普通产品目录

var aaa = document.getElementsByTagName('div');
	var j =0;
	for(i=0;i<aaa.length;i++)
	{
		if(aaa[i].id.indexOf('submenu_')>-1 && j ==0 )		
		{
			aaa[i].style.display = '';
			break;
		}
	}	
function showsubmenu(sid)
{
	var aaa = document.getElementsByTagName('div');
	var j =0;
	for(i=0;i<aaa.length;i++)
	{
		if(aaa[i].id.indexOf('submenu_')>-1)			
			aaa[i].style.display = 'none';
	}	
	var bbb = document.getElementById("submenu_" + sid );
	bbb.style.display= '';
}