function numbersonly(myfield,e){var key;var keychar;if(window.event)key=window.event.keyCode;else if(e)key=e.which;else return true;keychar=String.fromCharCode(key); if((key==null)||(key==0)||(key==8)||(key==9)||(key==13)||(key==27)||(key==46))return true; else if((("0123456789").indexOf(keychar)>-1))return true;else return false;}