function validate_form ( )
{
    valid = true;

    if ( document.contact_form.first_name.value == "" )
    {
        alert ( "Please fill in the 'First Name' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.last_name.value == "" )
    {
        alert ( "Please fill in the 'Last Name' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.day_contact_number.value == "" )
    {
        alert ( "Please fill in the '9am - 5pm Contact Number' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.address.value == "" )
    {
        alert ( "Please fill in the 'Address' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.city.value == "" )
    {
        alert ( "Please fill in the 'City' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.state.value == "" )
    {
        alert ( "Please fill in the 'State' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.zip.value == "" )
    {
        alert ( "Please fill in the 'Zip Code' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.house_value_today_market.value == "" )
    {
        alert ( "Please fill in the 'What Would The Home Sell For Today If Placed On The Market' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.rebuild_cost.value == "" )
    {
        alert ( "Please fill in the 'What Would It Cost To Rebuild Your Home Today' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.square_footage.value == "" )
    {
        alert ( "Please fill in the 'Square Footage of Home' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.year_built.value == "" )
    {
        alert ( "Please fill in the 'square_footage' box." );
        valid = false;
    }
	else 
	if ( document.contact_form.all_information_correct.value == "" )
    {
        alert ( "Please fill in the box verifying all your information is correct." );
        valid = false;
    }
    return valid;
}