function getElement(aID)
{
return (document.getElementById) ? document.getElementById(aID) : document.all[aID];
}

var htm = '<div style=width:500px;height:300px;color:red;font-size:20px;text-align:center;background-color:#dddddd;><br><br><br><br><br>Gallery doesn&#39;t exist</div>';

var obj = getElement('_cincopa_widget_ab4f4ea6-7775-4366-89b3-d6c7decc1d9d');
if (obj == null)
document.write(htm);
else
obj.innerHTML = htm;