function sel() {
	var fil_work = '' ;
	var filter = document.getElementById('filter');
	var index = filter.selectedIndex;
	var opt = filter.options[index];
	fil_work = 'filter=' + opt.value ;

	var filter1 = document.getElementById('reviewer_sex');
	var index1 = filter1.selectedIndex;
	var opt1 = filter1.options[index1];
	fil_work = fil_work + '&fil_sex=' + opt1.value ;

	var filter2 = document.getElementById('reviewer_age');
	var index2 = filter2.selectedIndex;
	var opt2= filter2.options[index2];
	fil_work = fil_work + '&fil_age=' + opt2.value ;

	var filter3 = document.getElementById('reviewer_pref');
	var index3 = filter3.selectedIndex;
	var opt3 = filter3.options[index3];
	fil_work = fil_work + '&fil_pref=' + opt3.value ;
	
	location.href = 'review.php?' + fil_work;
}