function checkForm(form){
	if(form.email.value == ''){
		alert('Please enter your email.');
		return false;
	}
	
	if ((form.email.value.indexOf('@') < 1) ||
        (form.email.value.indexOf('.') < 3 || form.email.value.indexOf('.') > form.email.value.length - 3)){
		alert('Email is not correct, please recheck.');
		return false;
	}

	if(typeof(form.message.value) != 'undefined' && form.message.value == ''){
		alert('Please enter your message.');
		return false;
	}

	if(typeof(form.recaptcha_response_field.value) != 'undefined' && form.recaptcha_response_field.value == ''){
		alert('please enter two words');
		return false;
	}

	return true;
}