function NumericOnly(myfield, e, dec)
{
	var key;
	var keychar;

	if (window.event)
		key = window.event.keyCode;
	else if (e)
   		key = e.which;
	else
   		return true;

   keychar = String.fromCharCode(key);
	// control keys\n";
	if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) )
   		return true;
	// letter and numbers
	else if ((("0123456789.").indexOf(keychar) > -1))
 		return true;
	else
   		return false;
}