/*

  Author - Rudolf Naprstek
  Website - http://www.thimbleopensource.com/tutorials-snippets/jquery-plugin-filter-text-input
  Version - 1.1.0
  Release - 20th June 2010

  $("selector").filter_input({regex:'[0-9]'});

*/
(function($){
$.fn.extend({
filter_input: function(options) {
var defaults = {regex:".*",live:false}
var options =  $.extend(defaults, options);  
var regex = new RegExp(options.regex);  
function filter_input_function(event) {
var key = event.charCode ? event.charCode : event.keyCode ? event.keyCode : 0;
if (key == 13 || key == 8 || key == 37 || key == 39 || key == 46 || key ==35 || key==36) return true;
var string = String.fromCharCode(key);
if (regex.test(string)) {
return true;}return false;}
if (options.live) {
$(this).live('keypress', filter_input_function); 
} else {
return this.each(function() {  
var input = $(this);
input.unbind('keypress').keypress(filter_input_function);
});}}});
})(jQuery);