function changeSearchMod ()
{
	frm = document.forms['search_form'];
	if (!frm.elements['smod[]'])	return;

	for (i=0; i<frm.elements['smod[]'].length; i++)
	{
		id_name = 'search_'+frm.elements['smod[]'][i].value+'_fields';

		showRow (id_name, frm.elements['smod[]'][i].checked);
	}
}