Roo.log(this.el);
Roo.log('start : ' + this.el.dom.selectionStart);
Roo.log('end : ' + this.el.dom.selectionEnd);
+ Roo.log('length : ' + this.getValue().length);
if((event.getKey() == 8 || event.getKey() == 46) && this.getValue().length ==1){ // backspace and delete key
event.preventDefault();
this.setValue('');