$(document).ready( function() {

	$('#ingredient-filter input').bind('click', function(event) {
        /*event.preventDefault();*/
		var allVals = [];
		 $('#ingredient-filter :checked').each(function() {
		   allVals.push($(this).val());
		 });
		if(!filterurl.href.match(/f_([0-9]{1,2}(,){0,1})+/)) {
			//add instead of replace
			if(allVals.length > 0)
				filterurl.href += 'f_'+allVals;
		} else {
			filterurl.href = filterurl.href.replace(/f_([0-9]{1,2}(,){0,1})+/,'f_'+allVals);

			filterurl.href = filterurl.href.replace(/f_\/*$/,'');
		}
    });

});