function validate_form(item)
{
	alert("OK");
	
	var $Name;
	var $Email;
	var $Telephone;
	var $response;
	var $errors;

	$Name=item.Name.value;
	$Email=item.Email.value;
	$Telephone=item.Telephone.value;

	$response="There are errors on the form: \n";
	$errors=0;

	if (isEmpty($Name))
	{
		$response+="\n- Name not entered";
		$errors+=1;
	}

	if (isEmpty($Email) )
	{

		if ($errors!=0)
		{
			$response+=", ";
		}

		$response+="\n- Email Address not entered";
		$errors+=1;
	}

	if (! isEmail($Email) )
	{

		if ($errors!=0)
		{
			$response+=", ";
		}
		$response+="\n- Email address invalid";
		$errors+=1;
	}


	if (isEmpty($Telephone) )
	{

		if ($errors!=0)
		{
			$response+=", ";
		}

		$response+="\n- Telephone number not entered";
		$errors+=1;
	}

	if ($errors==0)
	{
//		alert ("OK");
		return true;
	}
	else
	{
		alert ($response);
		return false;
	}
}

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

function isEmail (s)
{   
   
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)

    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;

    else 

return true;
}