function ValidateInput()
{
    if (document.getElementById('fullname') != null)
    {
        if (document.getElementById('fullname').value == '')
        {
            alert("Please enter your name.");
            document.getElementById('fullname').focus();
            return false;
        }
    }
    if (document.getElementById('address') != null)
    {
        if (document.getElementById('address').value == '')
        {
            alert("Please enter your mailing address.");
            document.getElementById('address').focus();
            return false;
        }
    }
    if (document.getElementById('city') != null)
    {
        if (document.getElementById('city').value == '')
        {
            alert("Please enter your city and state.");
            document.getElementById('city').focus();
            return false;
        }
    }
	if (document.getElementById('zip') != null)
    {
        if (document.getElementById('zip').value == '')
        {
            alert("Please enter your zip code.");
            document.getElementById('zip').focus();
            return false;
        }
    }
	if (document.getElementById('phone') != null)
    {
        if (document.getElementById('phone').value == '')
        {
            alert("Please enter your phone number.");
            document.getElementById('phone').focus();
            return false;
        }
    }
	if (document.getElementById('email') != null)
    {
        if (document.getElementById('email').value == '')
        {
            alert("Please enter your email.");
            document.getElementById('email').focus();
            return false;
        }
    }
    return true;
}
// JavaScript Document