| tinyMCEPopup.requireLangPack();
var ExampleDialog = {
    init : function() {
        var f = document.forms[0];
        // Get the selected contents as text and place it in the input
        f.someval.value = tinyMCEPopup.editor.selection.getContent({format : 'text'});
        f.somearg.value = tinyMCEPopup.getWindowArg('some_custom_arg');
    },
    insert : function() {
        // Insert the contents from the input into the document
        tinyMCEPopup.editor.execCommand('mceInsertContent', false, document.forms[0].someval.value);
        tinyMCEPopup.close();
    }
};
tinyMCEPopup.onInit.add(ExampleDialog.init, ExampleDialog);
 |