function validate()
{
    var valid = true;
    
    if (checkEmail(document.getElementById("txtEmail").value) && document.getElementById("txtEmail").value.length > 0)
    {
        document.getElementById("lblEmail").style.color="black";
    }
    else
    {
        document.getElementById("lblEmail").style.color="red";    
        valid = false;
    }
    
    if (document.getElementById("txtPassword").value.length > 0)
    {
        document.getElementById("lblPassword").style.color="black";
    }
    else
    {
        document.getElementById("lblPassword").style.color="red";    
        valid = false;    
    }
    return valid;
}
function checkEmail(email)
{
    var valid = false;
    var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
    if (filter.test(email))
    {
        valid = true;
    }
    else
    {
        valid = false;
    }
    return valid;
}