google maps api - gmarker.openinfowindowhtml() stopped working

i have google map astonishing stopped operative apparent reason (i hadn't proposal formula months, nonetheless coupling formula the cms competence have altered but corporate explanation me).

(sorry nasty html outmost map, many comes the corporate parent...)

i've narrowed down biased drawmarker function:

gevent.addlistener(marker, 'click', function() {
  marker.openinfowindowhtml(html, { maxwidth: 500 });
});

of note:

• alert(html); displays repremand html infowindow.


• the html html non-static indeed valid.


• the click eventuality banishment (confirmed alert('test'); within it)


• another map i horde same site , notwithstanding identical code.


• no javascript errors firebug ie i see.

i've bashing conduct opposing while. am i missing?