javascript - audio tag working in ie8 except when bound to onclick event -

i having trouble getting mp3 file play in ie8 when bound image onclick event. have plenty of audio on site plays on autoplay in many browsers when user clicks on image hear audio file, won't play. also, synching audio jquery animations if may conflicting code. code follows, in advance may able shed light on problem.

<img onclick="document.getelementbyid('call-1a').play()" id="keypad" class="float-left" src="img/graph.gif" alt="" />