Function isArray

clusterize.js:327–329

(arr)

    return element.removeEventListener ? element.removeEventListener(evt, fnc, false) : element.detachEvent("on" + evt, fnc);
  }
  function isArray(arr) {
    return Object.prototype.toString.call(arr) === '[object Array]';
  }
  function getStyle(prop, elem) {
    return window.getComputedStyle ? window.getComputedStyle(elem)[prop] : elem.currentStyle[prop];
  }