// JavaScript Document

var ref_li = document.getElementById('referral_li');

var ref_imput = document.getElementById('referral');

var select_el = document.getElementById("Where_Did_You_Hear_About_Us");

select_el.onchange = showhide_referral;

showhide_referral();

function showhide_referral () {
	if (select_el.selectedIndex == select_el.options.length -1) {
		 ref_li.style.display = 'block';
	} else {
		ref_li.style.display = 'none';
		
	}
}