[ajax] fix the fix introduced in 3.9.1 to avoid duplicated loads: it cause some other errors since the browser may load the script *after* the server-response event is emited, causing pb if the script interact with this event

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function set_tab(tabname, cookiename) {

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    // set appropriate cookie

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    loadRemote('json', ajaxFuncArgs('set_cookie', null, cookiename, tabname));

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    // trigger show + tabname event

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    trigger_load(tabname);

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}

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