// JavaScript Document

function sendFormAjax ( form, form_container, indicator, success_container )
{
	form_container.style.visibility = 'hidden'
	indicator.removeClass('hidden')
	var fields = getInputTextSelectFields(form)
	var data = new Array()
	for(var i = 0; i < fields.length; i++) data.push(fields[i].name + '=' + fields[i].value)
	var myRequest = new Request({
		method: 'get', 
		url: 'page_parts/newsletter.php',
		onSuccess: function (responseText, responseXML) {
//			alert(responseText)
			form.resetAjax()
			success_container.removeClass('hidden')
			indicator.addClass('hidden')
		}
	}).send(data.join('&'));
}

function validateForm ( form, required_fields, form_validation, error_display_container )
{
	form.resetAjax = function () {
		error_display_container.innerHTML = ''
		var fields = getInputTextSelectFields(form)
		for(var i = 0; i < fields.length; i++) {
			fields[i].removeClass('error')
			fields[i].value = fields[i].defaultValue
		}
	}
	var messages = new Array()
	var required_missing_msg_added = false
	var valid = true
	var fields = getInputTextSelectFields(form)
	for(var i = 0; i < fields.length; i++) {
		var valid_email = (fields[i].name == form_validation.email_fieldname) ?(form_validation.email_pattern.exec(fields[i].value) != null) :null
		for(var j = 0; j < required_fields.length; j++) {
			var required = $(form[required_fields[j]])
			if(fields[i] != required) continue
			if(fields[i].value == fields[i].defaultValue ||
			fields[i].value == '' || valid_email === false) {
				valid = false
				fields[i].addClass('error')
				if(valid_email == null) {
					if(form_validation.message_required_missing && !required_missing_msg_added) {
						messages.push(form_validation.message_required_missing)
						required_missing_msg_added = true
					}
					if(form_validation.message_field_empty) {
						var fieldname = fields[i].name.substring(0, 1).toUpperCase() + fields[i].name.substr(1)
						messages.push(form_validation.message_field_empty.replace(/\%fieldname/, fieldname))
					}
				}
				if(valid_email == false) {
					messages.push(form_validation.message_email_pattern_failed)
				}
			} else fields[i].removeClass('error')
		}
	}
	error_display_container.innerHTML = ''
	for(var i = 0; i < messages.length; i++) {
		var m_box = document.createElement('div')
		m_box.appendChild(document.createTextNode(messages[i]))
		error_display_container.appendChild(m_box)
	}
	return valid
}

function cleanFormDefaultValues ( form )
{
	var fields = getInputTextFields(form)
	if(!fields) return
	for(var i = 0; i < fields.length; i++) {
		if(fields[i].value == fields[i].defaultValue) {
			fields[i].value = ''
		}
	}
}

function setDefaultFormValues ( form, default_values )
{
	var fields = getInputTextFields(form)
	if(!fields) return
	for(var i = 0; i < fields.length; i++) {
		fields[i].defaultValue = default_values[fields[i].getAttribute('name')]
		fields[i].value = fields[i].defaultValue
	}
}

function getInputTextFields ( form )
{
	var fields = form.getElementsByTagName('input')
	var r = new Array()
	for(var i = 0; i < fields.length; i++) {
		if(fields[i].nodeType != 1) continue
		if(fields[i].getAttribute('type') != 'text') continue
		r.push(fields[i])
	}
	return r.length ?r :false
}

function getInputTextSelectFields ( form )
{
	var r = new Array()
	var fields = form.getElementsByTagName('input')
	for(var i = 0; i < fields.length; i++) {
		if(fields[i].nodeType != 1) continue
		if(fields[i].getAttribute('type') != 'text' && fields[i].getAttribute('type') != 'radio') continue
		r.push(fields[i])
	}
	var fields = form.getElementsByTagName('select')
	for(var i = 0; i < fields.length; i++) {
		if(fields[i].nodeType != 1) continue
		r.push(fields[i])
	}
	return r.length ?r :false
}