function fnCheckForm() {
	var email = document.getElementsByName('email')[0];
	var mobile = document.getElementsByName('phone')[0];
	var submit_button = document.getElementsByName('submit_button')[0];
	if (email.value.length > 0)
	{
		submit_button.disabled = false;
	}
	if (mobile.value.length > 0)
	{
		submit_button.disabled = false;
	}
}