javascript to change value on screen with radio button
$(document).ready(function(){
$('input[name=content_type]').on('change', function(){
var n = $(this).val();
switch(n)
{
case '1':
$('#show').html("1st radio button");
break;
case '2':
$('#show').html("2nd radio button");
break;
case '3':
$('#show').html("3rd radio button");
break;
}
});
});