function validate_form_contact(f)
{
    var sMessage = "";
    var blnValid = true;
    
    if(f.Contact_Name.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "Contact Name is required.");
    }
    if(f.Contact_Company_Name.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "Company Name is required.");
    }
    if(f.Contact_Address.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "Address is required.");
    }
    if(f.Contact_City_state_Zip.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "City, State and Zip are required.");
    }
    if(f.Contact_Phone.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "Phone Number is required.");
    }
    if(f.email.value == "")
    {
        blnValid = false;
        sMessage = appendMessage(sMessage, "Email Address is required.");
    }
   
    //keep this below
    if(!blnValid)
    {
        alert(sMessage)
        return false;
    }
    else
    {
        return true;
    }
}