// Check suburb name has been entered
function checkSuburb(form)
{
	if (form.rn) {
		form.rn.value = form.rn.value.replace(/^\s+/, '');
		form.rn.value = form.rn.value.replace(/\s+$/, '');
		if (form.rn.value == '') {
			alert("Please enter a suburb or postcode");
			return false;
		}
	}
	return true;
}

// Check if the length of the input text is sufficient
function check_text_length(field, min, name)
{
	field.value = field.value.replace(/^\s+/, '');
	field.value = field.value.replace(/\s+$/, '');

	if (field.value.length < min) {
		alert("Please enter at least " + min + " characters for the " + name);
		return false;
	} 
	return true;
}