function findObject(objectId)
{
	if(window.document.getElementById && window.document.getElementById(objectId))
		return window.document.getElementById(objectId);
	else if (window.document.all && window.document.all(objectId))
		return window.document.all(objectId);
	else if (window.document.layers && window.document.layers[objectId]) 
		return window.document.layers[objectId];
	else
		return null;
}


function getFormData(formName)
{
	var _form = null;
	var _responseBody = '';
	var _elm = null;
		
	if (typeof(findObject)=='function')
	{
		_form = findObject(formName);
	}
	else
	{
		alert('Form object ' + formName + ' could not be found');
	}

	if (_form == null)
		return null;
		
	for(i=0;i<_form.elements.length;i++)
	{
		_elm = _form.elements[i];

		switch(_elm.type)
		{
			case 'submit'	: break;
			case 'checkbox' :
			case 'radio' :
			{
				if(_elm.checked == true)
					_responseBody += '&'+ encodeURIComponent(_elm.name)+'='+encodeURIComponent(_elm.value);
				break;
			}
			default :
			{
				_responseBody += '&'+ encodeURIComponent(_elm.name)+'='+encodeURIComponent(_elm.value);
				break;
			}
		}	
	}
	
	return _responseBody;
}

function submitForm(formname)
{
	try
	{
		var obj = findObject(formname);
		if (obj != null)
			obj.submit();
	}
	catch(e) {}

	return false;
}


function doSubscribe()
{
	var obj = findObject('email');
	if (obj == null)
		alert('U kon niet aangemeld worden');
	else
	{
		Subscribe.SubscribeMember(obj.value,function(response)
		{
			alert(response.value);
		});
	}
}

function checkForm()
{
	Form.CheckForm(getFormData('competitieForm'),function(response)
	{
		if (response.value != null)
			alert(response.value);
		else
			submitForm('competitieForm');
			
	});
}

function checkReserve(item)
{
	try
	{
		var obj = findObject('reservedag');
		if (obj != null)
			obj.disabled = !item.checked;
	}
	catch(e) {}
}

function checkType(item)
{
	try
	{
		var obj = findObject('type');
		if (obj != null)
			obj.disabled = !item.checked;
	}
	catch(e) {}
}