add:  window.openDialog("chrome: "_blank", "chrome,modal,resizable", "browser"); 
context: function ComposerMultiplexHandler(event){    var node = event.target;    var name = node.getAttribute('name');    if (name == 'detectorGroup') {        ComposerSelectDetector(event, true);    } else if (name == 'charsetGroup') {        var charset = node.getAttribute('id');        charset = charset.substring('charset.'.length, charset.length)        EditorSetDocumentCharacterSet(charset);    } else if (name == 'charsetCustomize') {        //do nothing - please remove this else statement, once the charset prefs moves to the pref window    } else {        SetForcedEditorCharset(node.getAttribute('id'));    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/eda86a3664aa1d59add127d277a9d318f6de52e6/charsetOverlay.js/clean/xpfe/global/resources/content/charsetOverlay.js