function limitChangeTextBox(B,D,C){var E=parseInt(Event.element(B).value,10);var A=(B.which)?B.which:B.keyCode;if(C&&String(E).length<C&&A==Event.KEY_TAB){Event.stop(B)}if(A==Event.KEY_TAB||A==Event.KEY_BACKSPACE||A==Event.KEY_LEFT||A==Event.KEY_RIGHT||A==Event.KEY_HOME||A==Event.KEY_END||A==Event.KEY_DELETE){return true}if(A>31&&(A<48||A>57)){Event.stop(B)}if(String(E).length>=D){Event.stop(B)}return true};