function ValidLogin()
{
	var name = document.getElementById("txtName");
	var pwd = document.getElementById("txtPwd");
	var code = document.getElementById("txtCode");
	if(Trim(name.value)==""||!IsMail(name.value)){
		alert("用户名请设置为您的Email！");
		name.focus();
		return false;
	}
	if(Trim(pwd.value)==""||pwd.value.length<6||!IsVadCode(pwd.value)){
		alert("请填写正确密码！");
		pwd.focus();
		return false;
	}
	if(Trim(code.value)==""||code.value.length!=5||!IsVadCode(code.value)){
		alert('请填写正确的验证码！');
		code.focus();
		return false;
	}
	return true;
}

function renderImg()
{       
    if(document.getElementById("imgVerify")) document.getElementById("imgVerify").src = "/Include/CodeImage.aspx?" + Math.random();
}