var SelectSubmitter = Class.create(
{
	initialize: function(formId)
	{
		if(!$(formId))
			return false;

		$$('#'+formId+' select').each(function(elem)
		{
			$(elem).observe('change', function()
			{
				$(formId).submit();
			});
		});
	}
});
Event.observe(window, 'load', function()
{
	var Selector = new SelectSubmitter('frontAdSearch');
});