function btCheckUser()
{
var user=document.getElementById ("ctl00_ContentPlaceHolder1_tbName").value;
var email=document.getElementById ("ctl00_ContentPlaceHolder1_tbEmail").value;

if(cisempty(user))
alert('请输入用户名！');
else if(cisempty(email))
alert('请输入邮箱！');
else if(!cemail(email))
alert('输入的邮箱格式不正确！');
else 
return true;
return false;
}

function btchother()
{
var upfile=document.getElementById ("ctl00_ContentPlaceHolder1_fu1").value;
var home=document.getElementById ("ctl00_ContentPlaceHolder1_tbHome").value;
var pwd1=document.getElementById("ctl00_ContentPlaceHolder1_tbPwd").value;
var pwd2=document.getElementById ("ctl00_ContentPlaceHolder1_tbPwdCheck").value;
var pques=document.getElementById ("ctl00_ContentPlaceHolder1_tbPwdQ").value;
var pansw=document.getElementById ("ctl00_ContentPlaceHolder1_tbPwdA").value;
var vali=document.getElementById ("ctl00_ContentPlaceHolder1_tbVal").value;

if(upfile!="" && !cpicture(upfile))
alert("头像只允许为图片格式文件！"); 
else if(home!="" && !rehome.test(home))
alert("个人主页的网址格式不正确！");
else if(cisempty(pwd1))
alert('请输入密码！');
else if(cisempty(pwd2))
alert('请输入确认密码！');
else if(!equal(pwd1,pwd2))
alert('两次输入的密码不同！');
else if(cisempty(pques))
alert('密码安全问题是密码忘记时，找回密码的问题！');
else if(cisempty(pansw))
alert('密码安全问题是密码忘记时，找回密码的答案！');
else if(cisempty(vali))
alert("请输入验证码。");
else 
return true;
return false;
}

function btCheckAll()
{
if(!btCheckUser())
return false;

return btchother();
}

function btExpCheck()
{
if(!btCheckUser())
return false;
var field=document.getElementById ("ctl00_ContentPlaceHolder1_tbfield").value;
var truename=document.getElementById("ctl00_ContentPlaceHolder1_tbTrueName").value;
var selfinfo=document.getElementById ("ctl00_ContentPlaceHolder1_tbInst").value;
if(cisempty(field))
alert('请输入研究领域！');
else if(cisempty(truename))
alert('请输入真实姓名！');
else if(cisempty(selfinfo))
alert('请输入简介！');
else
return true;
return false;

}

function btExpCheckAll()
{
if(!btExpCheck())
return false;

return btchother();
}

function LoginCheck()
{
var name=document.getElementById ("Login1_tbName").value;
var pwd=document.getElementById ("Login1_tbPwd").value;

if(cisempty(name))
alert("请输入用户名！");
else if(cisempty(pwd))
alert("请输入密码！");
else
return true;
return false;
}