function toggle_visibility(id) {
	var e = document.getElementById(id);
	var number = document.contactForm.budget.selectedIndex;
	if((document.contactForm.budget.options[number].value == 'Please advise me on the plan suitable for me') || (document.contactForm.budget.options[number].value == 'Select')) {
		e.style.display = 'none';
	} else {
		e.style.display = 'block';
	}
}