if (!is_ie) {
var myrules = {
    'a' : function (el) {
        var link = (el.getAttribute('href'));
        if (link.search(/^http:\/\//) != -1 && link.search(/atelierdeslangues\.ch/) == -1) {
            el.setAttribute('class', 'external');
            el.setAttribute('target', '_blank');
        }

        /*el.onclick = function(){
            alert(el.getElementsByTagName('a').length);
        }*/
    }
};
Behaviour.register(myrules);
}