jq(document).ready(function() {
    var first =jq('#portletPageFirstColumn');
    var second =jq('#portletPageSecondColumn');
    var fh = first.height();
    var sh = second.height();
    var n_items_first = jq('#portletPageFirstColumn dl.portlet').length;
    var n_items_second =  jq('#portletPageSecondColumn dl.portlet').length;

if ((n_items_first == 1) && (n_items_second ==1)) {
    if (fh >= sh){
        var h = fh;
    }
    else {
        var h = sh;
    }
}
    jq('#portletPageFirstColumn dl.portlet').height(h);
    jq('#portletPageSecondColumn dl.portlet').height(h);
 });