function checkemail()
{
	var email=document.getElementById("txtEmail").value;
	if(email=="")
	{
		document.getElementById("memail").innerHTML="Sorry, your telephone is require!";
		return false;
	}
	else if(/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(email)==false)
	{
		document.getElementById("memail").innerHTML="Sorry, your e-mail format is wrong!";
		return false;
	}
	else if(SiteContentMaster.find_password.CheckLoginName(email).value==false)
	{
		document.getElementById("memail").innerHTML="Sorry, this e-mail have not registered!";
		return false;
	}
	else
	{
		document.getElementById("memail").innerHTML="";
		return true;
	}
}