//导航切换
function jeeNav(o,n){
	 o.className="selected";
	 var t;
	 var id;
	 var s;
	 for(var i=1;i<=n;i++){
	 	var str=o.id;
	   id ="nav"+i;
	   t = document.getElementById(id);
	   s = document.getElementById("sub"+i);
	   if(id != o.id){
	   	 t.className="hide";

	   	 s.style.display = "none";
	   }
	   else{
			s.style.display = "block";

	   }
	 }
}

//投票验证
function check_votes(allowCount) {
var voteItems=document.getElementsByName('itemIds');
  var count = 0;
  for(var i=0;i<voteItems.length;i++)
  {
   if(voteItems[i].checked){
     count++;
   }
  }
  if(count==allowCount&&allowCount>1){
   for(var i=0;i<voteItems.length;i++){
     if(!voteItems[i].checked){
       voteItems[i].disabled = true;
     }
   }
   return true;
  }
  else{
    for(var i=0;i<voteItems.length;i++){
       voteItems[i].disabled = false;
    }
  }
  if(count==0){
	  alert("对不起，请至少选择一个投票项！");
	  return false;0
  }
  return true;
}



function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值   
{   
    var Days = 30; //此 cookie 将被保存 30 天   
    var exp  = new Date();    //new Date("December 31, 9998");   
    exp.setTime(exp.getTime() + Days*24*60*60*1000);   
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();   
} 



function getCookie(name)//取cookies函数           
{   
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));   
     if(arr != null) return unescape(arr[2]); return null;   
  
} 


function delCookie(name)//删除cookie   
{   
    var exp = new Date();   
    exp.setTime(exp.getTime() - 1);   
    var cval=getCookie(name);   
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();   
}