function checkform(obj){
	var username = obj.username.value;
	var tel = obj.tel.value;
	var content = obj.content.value;
	if(username==null||username==""){
		document.getElementById("username_tishi").innerHTML = "请输入您的联系姓名";
		return false;
	}else if(tel==null||tel==""){
		document.getElementById("tel_tishi").innerHTML = "请输入您的联系电话";
		return false;
	}else if(content==null||content==""){
		document.getElementById("content_tishi").innerHTML = "请输入您的留言信息";
		return false;
	}
	return true;
}
function changemenu(obj,obj1){
	for(var i=1;i<obj1;i++){
		if(i==obj){
			document.getElementById("menu"+i).className = "wo";
		}else{
			document.getElementById("menu"+i).className = "";
		}
	}
}
function changesub(obj){
	var areanum = $("areanum").value;
	for(var i=1;i<=areanum;i++){
		if(obj==i){
			$("a"+i).className = "li1";
		}else{
			$("a"+i).className = "li2";
		}
	}		
}
function showsub(obj){
	document.getElementById("fzshow").parentNode.style.display = "";
    document.getElementById("fzshow").innerHTML = "";
    currentPos = "fzshow";
    send_request("manager.jsp?op=showsub&area="+obj);		
}