@so_is_thisDec 02.2006 — #Are you saying you wish to validate that exactly two options are selected?
That would be as follows: <i> </i>var sel = document.forms['formname'].elements['selectname']; var opt = sel.options; var x, z = 0, len = opt.length; for (x=0; x<len; ++x) { if (opt[x].selected) ++z; } if (z != 2) { alert("Two options must be selected."); sel.focus(); return false; }