function fn_postseldel(frm_name, from_name, stext) {
	var frm_sel = eval('document.' + frm_name + '.' + from_name);
	
    for (m = frm_sel.options.length - 1; m > 0; m--) {
        frm_sel.options[m] = null;
    }
	frm_sel.options[0] = new Option(stext, '')
}

function fn_postchange(frm_name, si_name, do_name, dong_name, svalue, slevel) {
	var si_field = eval('document.' + frm_name + '.'+si_name);
	si_name = si_field[si_field.selectedIndex].value;
	if (slevel == 1)	{
		fn_postseldel(frm_name, do_name, '::·ÎµùÁß::');
		fn_postseldel(frm_name, dong_name, '::Çش絿::');
	} else if (slevel == 2)	{
		fn_postseldel(frm_name, dong_name, '::·ÎµùÁß::');
	} 
	ifrm_postlink.location.href = '/frame_sub_addr.asp?frm_name='+frm_name+'&si_name='+si_name+'&do_name='+do_name+'&dong_name='+dong_name+'&svalue='+svalue+'&slevel='+slevel;
}

function fn_postsido(frm_name, si_name, do_name, dong_name, svalue, slevel) {
	var si_field = eval('document.' + frm_name + '.'+si_name);
	si_name = si_field[si_field.selectedIndex].value;
	if (slevel == 1)	{
		fn_postseldel(frm_name, do_name, '::·ÎµùÁß::');
	} 
	ifrm_postlink.location.href = '/frame_sub_addr.asp?frm_name='+frm_name+'&si_name='+si_name+'&do_name='+do_name+'&dong_name='+dong_name+'&svalue='+svalue+'&slevel='+slevel;
}