Edit in JSFiddle

<div id="dcmn"></div>
//Next line is to prevent errors in IE while logging to console
if ( ! window.console ) console = { log: function(){} };

$(document).ready(function(){
    $('#dcmn').pcclient({
        targetName: 'pushcall',
        clientType: 'cmn',
        locale: 'en',
        userMessages: {
            en:{
                'CALL_ME_NOW_TITLE': 'This is a custom title'
            }
        },
        forceHTML: true,
        eventCallback: function (event, eventData) {
            console.log("eventCallback: %o %o", event, eventData);
        }
    });	
});