Sorry for the late response, your question escaped my mind.
(function ($) {
(function Forever(){ // we create a function called Forever
var grabval = $('#edit-title').val();
$('.vertical-tab-button').each(function(){
if ($(this).children().children('strong').text() == 'Content Limit'){
if (grabval == 0 && $(this).children().children('span') == null){
$(this).children().children('strong').after('<span class="summary">Not Limited</span>');
}
else if (grabval == 0 && $(this).children().children('span') != null){
$(this).children().children('span').html('Not Limited');
}
else if (grabval != 0 && $(this).children().children('span') == null){
$(this).children().children('strong').after('<span class="summary">Limited</span>');
}
else if (grabval != 0 && $(this).children().children('span') != null){
$(this).children().children('span').html('Limited');
}
}
});
setTimeout(Forever, 1);
})();
})(jQuery)
I used the node title for mine, so if you change the title to 0 or 1 or 2 ..etc, it will change.
So all you have to do is change the var grabtext = $('#edit-title').val();
more specifically the #edit-title
part, and put the ID or Class name of your Maximum per time period box.