if(evento.which==37 && !evento.shiftKey  && !evento.ctrlKey  && !evento.altKey  && !evento.metaKey){ // KeyLeft
            var info=tableInfo(this.activeElement);
            if(info.table){
                if(evento.ctrlKey || info.td.textContent=='' || !getCaretPosition(info.td)){
                    var newPos=info.td.cellIndex-1;