userValid = false;
currentPanel = null;
function showInfo(showPanel, info)
{
    if (currentPanel != null)
    {
       $(currentPanel).innerText ="";
       $(currentPanel).style.display = "none";
    }
    $(showPanel).innerText = info;
    $(showPanel).style.display = "block";
    currentPanel=showPanel;
}

function checkUserName()
{
  RegistrationValidator.validateUsername(DWRUtil.getValue("loginId"),handleValidateUsername);
}

function handleValidateUsername(status)
{
    if(status==1)
    {
       userValid=true;
       readClause();
       return;
    }
    if(status==-4||status==-2)
    {
       text="这个用户名已经被占用，换一个吧！";
    }
    if(status==-1)
    {
       text="用户名长度应在3到20之间";
    }
    if(status==-3)
    {
       text="用户名必须是5－20个字母或数字";
    }
    userValid = false;
    alert(text);
    $("loginId").focus();
    $("DoSubmit").disabled=true;
}

function readClause()
{
   if ($("ReadClause").checked==true&&userValid)
   {
      $("DoSubmit").disabled=false;
   }else
   {
      $("DoSubmit").disabled=true;
   }
}