var current_index = 'navi1';
function change_bg(obj){
	if(current_index=='navi1' || current_index=='navi8'){
		if(current_index=='navi1'){
			document.getElementById("navi1").style.backgroundImage='url(/yanni/navi1.jpg)';
		}
		if(current_index=='navi8'){
			document.getElementById("navi8").style.backgroundImage='url(/yanni/navi3.jpg)';
		}
	}else{
		document.getElementById(current_index).style.backgroundImage='url(/yanni/navi2.jpg)';
	}

	obj.style.backgroundImage='url(/yanni/navi_bg2.jpg)';
	obj.style.color='#FFFFFF';
	current_index=obj.id;
}

function change_bginit(id){
	var obj = document.getElementById(id);
	change_bg(obj);
}

function CheckLoginForm(){
  String.prototype.Trim = function(){return this.replace(/^\s+|\s+$/g,"");}
  if(document.login.memberID.value.Trim()==""){
    alert("请输入您的用户名！");
	document.login.memberID.focus();
    return false;
  }
  if(document.login.password.value.Trim()==""){
    alert("请输入您的登录密码！");
	document.login.password.focus();
    return false;
  }
	document.login.submit();
}

function foda(obj,tag1,tag2,tag3){
var pa=obj.parentNode.parentNode.parentNode;
var pa1=obj.parentNode.getElementsByTagName("div");

var ta;
tag1=='dd'?ta=pa.getElementsByTagName('dd'):ta=pa.getElementsByTagName(tag2)[0].getElementsByTagName(tag1);
  for(i=0;i<pa1.length;i++){
    if(pa1[i]==obj){
      pa1[i].className="cur";
	  ta[i].className="dis";
	 }else{
	   pa1[i].className="normal";
	   ta[i].className="undis";
	 }
  }
  var mm = document.getElementById("more").href=tag3
}