function autosize(obj)
{
  if (screen.width>=1024)
    obj.width="980";
  else
    obj.width="100%";
}
function setPosition(wz)
{
document.all.position.innerHTML="您现在的位置：" + wz;
}
function checkReg()
{
if (document.reg.yhm.value.length<2 || document.reg.yhm.value.length>20)
  {
    alert("用户名长度必须为2-20个字符");
    document.reg.yhm.focus();
    return false;
  }
if (document.reg.xm.value.length<2 || document.reg.xm.value.length>4)
  {
    alert("姓名不正确");
    document.reg.xm.focus();
    return false;
  }
if (document.reg.mm1.value.length<6)
  {
    alert("密码长度必须大于6个字符");
    document.reg.mm1.focus();
    return false;
  }
if (document.reg.mm1.value!=document.reg.mm2.value)
  {
    alert("两次输入密码不一致");
    document.reg.mm1.focus();
    return false;
  }
if (document.reg.mmkey.value=="")
  {
    alert("请输入密码钥匙");
    document.reg.mmkey.focus();
    return false;
  }
if (document.reg.nj.value=="")
  {
    alert("请选择年级");
    document.reg.nj.focus();
    return false;
  }
if (document.reg.xk.value=="")
  {
    alert("请选择学科");
    document.reg.xk.focus();
    return false;
  }
if (document.reg.xx.value=="")
  {
    alert("请输入Email地址");
    document.reg.xx.focus();
    return false;
  }
if (document.reg.xx.value.indexOf("@")==-1 || document.reg.xx.value.indexOf(".")==-1 || document.reg.xx.value.length<8)
  {
    alert("Email地址不正确");
    document.reg.xx.focus();
    return false;
  }
if (document.reg.yzm.value=="")
  {
    alert("验证码不正确");
    document.reg.yzm.focus();
    return false;
  }
}
function checklogin()
{
if (document.login.yhm.value.length<2 || document.login.yhm.length>20)
  {
    alert("用户名不正确");
    document.login.yhm.focus();
    return false;
  }
if (document.login.mm.value.length<6)
  {
    alert("密码不正确");
    document.login.mm.focus();
    return false;
  }
}
function selectpath()
{
  if (parent.window.location.href.indexOf("kj_")!=-1)
   {
   document.form1.action="upload.asp?lx=kj";
   }
  if (parent.window.location.href.indexOf("lw_")!=-1)
   {
   document.form1.action="upload.asp?lx=lw";
   }
  if (parent.window.location.href.indexOf("ja_")!=-1)
   {
   document.form1.action="upload.asp?lx=ja";
   }
  if (parent.window.location.href.indexOf("st_")!=-1)
   {
   document.form1.action="upload.asp?lx=st";
   }
  if (parent.window.location.href.indexOf("sc_")!=-1)
   {
   document.form1.action="upload.asp?lx=sc";
   }
  tjsc();
}
function tjsc()
{
if (document.form1.action=="")
  {
      if (parent.window.location.href.indexOf("user_center_edit.asp")==-1)
        {
         parent.document.all.xx.innerHTML="<font color=red>非法上传</font>"
         window.close();
         return false;
        }
      else
        xzpath();
        tjsc();
  }
else
  {
   if (document.form1.filename.value=="")
    {
     alert("请选择上传文件");
     return false;
    }
   else
    {
   parent.document.all.xx.innerHTML="<font color=red>正在上传...</font>"
   document.form1.submit();
    }
  }
}
function xzpath()
{
tempwz=window.location.href.indexOf("#sortID=")+8;
tempzf=window.location.href.substring(tempwz);
switch (tempzf)
 {
 case "1":
  document.form1.action="upload.asp?lx=" + tempzf;
  break;
 case "2":
  document.form1.action="upload.asp?lx=" + tempzf;
  break;
 case "3":
  document.form1.action="upload.asp?lx=" + tempzf;
  break;
 case "4":
  document.form1.action="upload.asp?lx=" + tempzf;
  break;
 case "5":
  document.form1.action="upload.asp?lx=" + tempzf;
  break;
 default:
   parent.document.all.xx.innerHTML="<font color=red>非法上传</font>"
   window.close();
   return false;
 break;
 }
}
function parentSameHeight()
{
parent.document.all.right.style.height=document.body.scrollHeight;
if (parent.document.all.regleft.clientHeight<document.body.scrollHeight)
{
parent.document.all.regleft.style.height=parent.document.all.right.style.height;
parent.document.all.regright.style.height=parent.document.all.right.style.height;
}
else
parent.document.all.regleft.style.height=parent.document.all.regleft.offsetHeight;
parent.document.all.regright.style.height=parent.document.all.regleft.offsetHeight;
document.body.style.background="url()";
}