function validate_main_search(form)
{	var aok = true;

	if (!form.q.value || form.q.value == 'Search')
	{
		var k = prompt('Please enter keywords to search', '');

		if (k)
		{	form.q.value = k;
		} else
		{	aok = false;
		}
	}

	return aok;
}