function chgOrder(num){
	var f = document.frm;
	f.offset.value = 0;
	f.order.value = num;
	f.submit();
}

function page(num){
	var f = document.frm;

	f.offset.value = num;
	//setCategories();
	f.submit();
}

function requery(set_frm){
	var f = (set_frm) ? set_frm : document.frm;
	f.offset.value = 0;

	//setCategories();

	var org_act = f.action;
	var a1 = Number(f.area1.value);
	var a2 = Number(f.area2.value);
	if(a1 == 1 && a2 >= 1 && a2 <= 23){
		f.action = "detail23.php";
	} else {
		f.action = "detail.php";
	}

	f.submit();
	f.action = org_act;
}

function setCategories(){
	var f = document.frm;
	var ctg = f.category.options;

	for(var i = 1; i < ctg.length; i++){
		if(ctg[i].selected){
			f.elements["category-" + ctg[i].value].value = "1";
		}
	}
}