context: function Startup(){    if (top.opener) {    var browser = top.opener.document.getElementById("content");    var l = browser.mPanelContainer.childNodes.length;    if (l > 1) {      var useButton = document.getElementById("browserUseCurrent");      useButton.label = useButton.getAttribute("label2");    }  }  parent.hPrefWindow.registerOKCallbackFunc(onOK);}
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