弹窗倒计时自动关闭

//弹出窗倒计时自动关闭

var cTime = 3;//应该是0就可以了
function timeClose()
{
var countDown = window.setTimeout('timeClose()',1000);
$("#tancengTitle").html("提示");
$("#tancengText").html("邮件已经发送成功
窗口将在三秒后关闭  "+cTime+"");
opentanceng();
 
if(cTime <= 0)
{
hideMes();
clearTimeout(countDown);
return false;
}
cTime--;
 
}

function sendEmail(){
cTime = 3;

$.ajax({
  type: "POST",   
  url: "/ecenter/servicesModule/memberNew/sendReferrerEmail",  
  data: "entryName="+entryName+"&EmailTF="+emailInput,
  contentType:'application/x-www-form-urlencoded;charset=utf-8',
  success: function(data){
if(data=="false"){
    $("#EmailTF").val("");
    $("#tancengTitle").html("");
    $("#tancengText").html("邮件发送失败");
    opentanceng();
    }else{      
    $("#EmailTF").val("");
    timeClose();
    // closeWindow();
    }
  }
}); 

}