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This option enables you to specify how dialogs/popups should be opened. Possible values are "window" and "modal", where the "window" option opens a normal window and the "modal" option opens a modal dialog. This option is set to "window" by default.
Note that this currently only has an effect in Internet Explorer (in other browsers, "window" is always used).
tinyMCE.init({
...
dialog_type : "modal"
});
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