var chooser = $('#calendar-date-filter');
//populate the filter if returning
if (gup('calendar-date-filter'))
	var pickedDate = decodeURIComponent(gup('calendar-date-filter')).replace(/\+/g, ' ');
	$('option', chooser).filter(function(){
		return this.value == pickedDate
	}).prop('selected', true);

var form = $('YOUR-FORM');
chooser.change(function(){
	var sel = $('option:selected', this);
	var vals = sel.val().split(';');
	$('#edit-field-YOUR-FIELD-value-min', form).val(vals[0]);
	$('#edit-field-YOUR-FIELD-value-max', form).val(vals[1]);
	$('.form-submit', form).trigger('click');
});
//move the select into the form so its params are sent
form.append(chooser);

var gup = function(name){
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp(regexS);
	var results = regex.exec(window.location.href);
	if (results == null) {
		return '';
	} else {
		return results[1];
	}
} // gup() - Get URL Param