function selecttag(showcontent,selfobj){		
		var tag = document.getElementById("tags").getElementsByTagName("li");
		var taglength = tag.length;
		for(i=0; i<taglength; i++){
			tag[i].className = "";
		}
		selfobj.parentNode.className = "selecttag";
		
		for(i=0; j=document.getElementById("tagcontent"+i); i++){
			j.style.display = "none";
		}
		document.getElementById(showcontent).style.display = "block";		
	}
	
	
	function selecttag1(showcontent,selfobj){		
		var tag = document.getElementById("tags1").getElementsByTagName("li");
		var taglength = tag.length;
		for(i=0; i<taglength; i++){
			tag[i].className = "";
		}
		selfobj.parentNode.className = "selecttag";
		
		for(i=0; j=document.getElementById("tagcontents"+i); i++){
			j.style.display = "none";
		}
		document.getElementById(showcontent).style.display = "block";		
	}
	
   function selecttag2(showcontent,selfobj){		
		var tag = document.getElementById("tags2").getElementsByTagName("li");
		var taglength = tag.length;
		for(i=0; i<taglength; i++){
			tag[i].className = "";
		}
		selfobj.parentNode.className = "selecttag";
		
		for(i=0; j=document.getElementById("tagcontents"+i); i++){
			j.style.display = "none";
		}
		document.getElementById(showcontent).style.display = "block";		
	}

 function selectPro_tag(showcontent,selfobj){		
		var tag = document.getElementById("pro_tags").getElementsByTagName("li");
		var taglength = tag.length;
		for(i=0; i<taglength; i++){
			tag[i].className = "";
		}
		selfobj.parentNode.className = "selecttag";
		
		for(i=0; j=document.getElementById("tagcontent"+i); i++){
			j.style.display = "none";
		}
		document.getElementById(showcontent).style.display = "block";		
	}

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