Ext.onReady(function(){
	Ext.BLANK_IMAGE_URL = '/js/ext/resources/images/default/s.gif';
    function ShowNewC() {
    	Ext.MessageBox.alert('Info', 'Vous devez vous identifier');
    }
	var NewBtnC = Ext.get('new_c');
	if(NewBtnC) {
		NewBtnC.on('click', ShowNewC, this, true);
	}
});