context: function cycleView (amount){    var len = client.viewsArray.length;    if (len <= 1)        return;        var tb = getTabForObject (client.currentObject);    if (!tb)        return;        var vk = Number(tb.getAttribute("viewKey"));    var destKey = (vk + amount) % len; /* wrap around */    if (destKey < 0)        destKey += len;        setCurrentObject (client.viewsArray[destKey].source);}
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