var WebSite1="http://www1.5778.com";
var WebSite2="http://www3.5778.com";
var WebSite3="http://www1.usr.name";
var WebURL="/Include/VerifyCode.asp";
var WebAct="/login_check.asp";
var WebSite=WebSite1;
var IfNum=0;

function ChkWebPlace()
{
  NumStr="0123456789";
  IfNum=0;
  UserStr=formdx.UserID.value
  if (UserStr.length<=0) IfNum=1;
  else
  {
    for (i=0;i<UserStr.length;i++)
    {
      if (NumStr.indexOf(UserStr.substr(i,1))<0)
      {
        IfNum=1;
        break;
      }
    }
  }
  if (IfNum==0)
  {
    if (formdx.UserID.value<200000 && formdx.action!=WebSite1+WebAct)
    {
      WebSite=WebSite1;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
    if (formdx.UserID.value>=200000 && formdx.UserID.value<500000 && formdx.action!=WebSite2+WebAct)
    {
      WebSite=WebSite2;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
    if (formdx.UserID.value>=500000 && formdx.action!=WebSite3+WebAct)
    {
      WebSite=WebSite3;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
  }
  else
  {
    if (formdx.UserID.value.substr(0,2).toUpperCase()=="T_" && formdx.action!=WebSite1+WebAct)
    {
      WebSite=WebSite1;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
    if (formdx.UserID.value.substr(0,2).toUpperCase()=="C_" && formdx.action!=WebSite2+WebAct)
    {
      WebSite=WebSite2;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
    if (formdx.UserID.value.substr(0,2).toUpperCase()!="T_" && formdx.UserID.value.substr(0,2).toUpperCase()!="C_" && formdx.action!=WebSite3+WebAct)
    {
      WebSite=WebSite3;
      if (formdx.TestCode) document.getElementById("VerImg").src=WebSite+WebURL;
      formdx.action=WebSite+WebAct;
    }
  }
}

function ChkUserID()
{
  ChkWebPlace()
  if (formdx.UserID.value=="")
  {
    alert("请输入用户名。");
    formdx.UserID.focus();
    return false;
  }
  if (formdx.UserPSW.value=="")
  {
    alert("请输入密码。");
    formdx.UserPSW.focus();
    return false;
  }
  if (formdx.TestCode)
  {
    if (formdx.TestCode.value=="")
    {
      alert("请输入验证码。");
      formdx.TestCode.focus();
      return false;
    }
  }
  return true;
}