function noNumbers(e){
var keycode = window.event ? e.keyCode : e.which;
The //Internet Explorer/Chrome browsers use to retrieve pressed characters, while Netscape/Firefox/Opera etc. use .
var keychar = String.fromCharCode(keycode);//fromCharCode: convert Unicode code to a character.
if(keycode >= 48 && keycode <= 57){ // Numeric keypad code: 0-9
e.returnValue = true;
}else if(keycode >=96 && keycode <= 105){ //Small keypad numeric codes: 0-9
e.returnValue = true;
}else if(keycode == 8 || keycode == 46){ // Delete key and delete
e.returnValue = true;
}else if(keycode == 109 || keycode == 189){ //Negative sign
e.returnValue = true;
// Other than that, no other inputs are allowed
}else{
e.returnValue = false;
}
}