(function($){$.fn.numberInput=function(){return this.each(function(){$(this).keydown(function(event){return KEYS_ALLOWED[event.keyCode]?true:false})})};var KEYS_ALLOWED={8:'BACKSPACE',9:'TAB',13:'ENTER',37:'LEFT_ARROW',39:'RIGHT_ARROW',46:'DELETE',48:'ZERO',49:'ONE',50:'TWO',51:'THREE',52:'FOUR',53:'FIVE',54:'SIX',55:'SEVEN',56:'EIGHT',57:'NINE',96:'ZERO',97:'ONE',98:'TWO',99:'THREE',100:'FOUR',101:'FIVE',102:'SIX',103:'SEVEN',104:'EIGHT',105:'NINE'}})(jQuery);