Allowing textbox to accepts only Numbers

          

$(document).ready(function(){

$("#txtNumbers").keydown(function(event) {

   if(event.shiftKey)

        event.preventDefault();

   if (event.keyCode == 46 || event.keyCode == 8) {

   }

   else {

        if (event.keyCode < 95) {

           

          if (event.keyCode < 48 || event.keyCode > 57) {

              if (event.keyCode >= 37 && event.keyCode <= 40) { 

               }

              else

              {

                event.preventDefault();

              }

          }

        }

        else {

              if (event.keyCode < 96 || event.keyCode > 105) {

                  event.preventDefault();

              }

        }

      }

   });

});