window.addEventListener=window.addEventListener||function(a,b){window.attachEvent("on"+a,b)},Date.now||(Date.now=function(){return(new Date).getTime()}),Object.create||(Object.create=function(a,b){function c(){}if("undefined"!=typeof b)throw"The multiple-argument version of Object.create is not provided by this browser and cannot be shimmed.";return c.prototype=a,new c}),Array.prototype.filter||(Array.prototype.filter=function(a){"use strict";if(void 0===this||null===this)throw new TypeError;var b=Object(this),c=b.length>>>0;if("function"!=typeof a)throw new TypeError;for(var d=[],e=arguments.length>=2?arguments[1]:void 0,f=0;c>f;f++)if(f in b){var g=b[f];a.call(e,g,f,b)&&d.push(g)}return d}),Array.prototype.map||(Array.prototype.map=function(a,b){var c,d,e;if(null==this)throw new TypeError(" this is null or not defined");var f=Object(this),g=f.length>>>0;if("function"!=typeof a)throw new TypeError(a+" is not a function");for(arguments.length>1&&(c=b),d=new Array(g),e=0;g>e;){var h,i;e in f&&(h=f[e],i=a.call(c,h,e,f),d[e]=i),e++}return d});