function search_submit() {
	var form = document.forms.search_form;
	if(form.search.value) {
		search_type='';
		for(i=0;i<form.search_type.length;i++)
			if(form.search_type[i].checked) search_type=form.search_type[i].value;
		form.action = form.action+'search/'+search_type+'/';
		form.submit();
	}
	return false;
}