function checklogin()
{
if (document.userlogin.userid.value.length<3)
{
alert("帐号没有填写或过短！");
document.userlogin.userid.focus();
return false;
} 
else if (document.userlogin.userid.value.length>20) 
{
alert("帐号不能超过20字符！");
document.userlogin.userid.focus();
return false;
} 
else if (document.userlogin.password.value.length<4) 
{
alert("密码没有填写或过短！"); 
document.userlogin.password.focus();
return false;
} 

else if (document.userlogin.password.value.length>15) 
{
alert("输入密码不能超过15字符！");
document.userlogin.password.focus();
return false;
} 
else
{
document.userlogin.submit();
}
}

function checksearchpassword1()
{
if (document.searchpassword1.userid.value.length<3)
{
alert("帐号没有填写或过短！");
document.searchpassword1.userid.focus();
return false;
} 
else if (document.searchpassword1.userid.value.length>20) 
{
alert("帐号不能超过20字符！");
document.searchpassword1.userid.focus();
return false;
} 
else
{
document.searchpassword1.submit();
}
}
function checksearchpassword2()
{
if (document.searchpassword2.userid.value.length<4)
{
alert("帐号没有填写或过短！");
document.searchpassword2.userid.focus();
return false;
} 
else if (document.searchpassword2.userid.value.length>20) 
{
alert("帐号不能超过20字符！");
document.searchpassword2.userid.focus();
return false;
} 
else
{
document.searchpassword2.submit();
}
}
function checksearchpassword3()
{
if (document.searchpassword3.passwordanswer.value.length<1)
{
alert("请输入您的回答！");
document.searchpassword3.passwordanswer.focus();
return false;
} 
else if (document.searchpassword3.passwordanswer.value.length>50) 
{
alert("输入回答过长，请输入５０字内！");
document.searchpassword3.passwordanswer.focus();
return false;
} 
else
{
document.searchpassword3.submit();
}
}
function checksearchpassword4()
{
if (document.searchpassword4.passwordanswer.value.length<1)
{
alert("请输入您的回答！");
document.searchpassword4.passwordanswer.focus();
return false;
} 
else if (document.searchpassword4.passwordanswer.value.length>50) 
{
alert("输入回答过长，请输入５０字内！");
document.searchpassword4.passwordanswer.focus();
return false;
} 
else
{
document.searchpassword4.submit();
}
}