function selectTag_v(showContent,selfObj,n){
	
	// 操作标签
	var tag = document.getElementById("tags_v"+n).getElementsByTagName("li");
	var taglength = parseInt(tag.length);
	
	for(i=0; i<taglength; i++){
		tag[i].className = "";
	}
	selfObj.parentNode.className = "selectTag_v";
	
// 操作内容
	for(j=0; j<taglength; j++){
		var j2=j+1;
		document.getElementById("tagContent_v"+n+j2).style.display = "none";
	}
	document.getElementById(showContent).style.display = "block";
}