function validate(thisForm) 
{
	with (thisForm) 
	{
		var alertMessage = "Please specify:\n";

		if (name.value == "") alertMessage += "\Your name\n";
		if (email.value == "") alertMessage += "\Your email address\n";
		if (company.value == "") alertMessage += "\Your company name\n";
		if (job_title.value == "") alertMessage += "\Your job title\n";
		if (phone1.value == "") alertMessage += "\Your office phone number\n";
		if (phone2.value == "") alertMessage += "\Your mobile phone number\n";

		if (alertMessage != "Please specify:\n") 
		{
			alert(alertMessage);
			return false;
		}
		else 
		return true;
	}
}

function updateOptionalBoxes(control, showValue, elementToUpdate)
{
	if (control.value == showValue)
	{
		document.getElementById(elementToUpdate).style.display = 'block';
	}
	else
	{
		document.getElementById(elementToUpdate).style.display = 'none';
	}
}