bagoftricks.js

  var noop = function(){};
  var console = window['console'] || {log: noop, debug: noop, info: noop, warn: noop, error: function(args){alert(args);}};
  var loadScriptTag = function(src, loaded, callback) {
    if(loaded()){
      callback();
      return;
    }
    console.log("Loading missing javascript.", "swfobject", src);
    var scriptTag=document.createElement('scr'+'ipt');
    scriptTag.type = 'text/javascript';
    scriptTag.src=src;
    var head = document.getElementsByTagName("head")[0];
    head.appendChild(scriptTag);
    function check(){
      if(loaded()){
        callback();
      } else {
        setTimeout(check, 50);
      }
    };
    check(); 
  };
  var hasClassName = function(element, className) {
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  };
  var addClassName = function(element, className) {
    if (!hasClassName(element, className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  };
  var removeClassName = function(element, className) {
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  };
  var lower = function(obj){
    return obj.toString().toLowerCase();
  };
  var collect = function(list,func){
    var x = [];
    for(var i=0; i<list.length; i++){
      if(func(list[i])){
        x.push(list[i]);
      }
    }
    return x;
  }
  var each = function(list,func){
    var x = [];
    for(var i=0; i<list.length; i++){
      x.push(func(list[i]));
    }
    return x;
  }
  var first = function(list,func){
    var x;
    for(var i=0; i<list.length; i++){
      x = func(list[i]);
      if(x){
        return list[i];
      }
    }
  }
  var merge = function(a,b){
    obj = {};
    for(prop in a){
      obj[prop] = a[prop];
    }
    for(prop in b){
      obj[prop] = b[prop];
    }
    return obj;
  }
  var deferUntilReady = function(callback){
    var readyRun = false;
    var ready = function(){
      if(readyRun){
        return;
      }
      readyRun = true;
      callback();
    }
    var domReady = null;
    if ( document.addEventListener ) {
      domReady = function() {
        document.removeEventListener( "DOMContentLoaded", domReady, false );
        ready();
      };
    } else if ( document.attachEvent ) {
      domReady = function() {
        if ( document.readyState === "complete" ) {
          document.detachEvent( "onreadystatechange", domReady );
          ready();
        }
      };
    }
    var bindRun = false;
    var bind = function() {
      if(bindRun) {
        return;
      }
      bindRun = true;
      if ( document.readyState === "complete" ) {
        return ready();
      }
      if ( document.addEventListener ) {
        document.addEventListener( "DOMContentLoaded", domReady, false );
        window.addEventListener( "load", ready, false );
      } else if ( document.attachEvent ) {
        document.attachEvent("onreadystatechange", domReady);
        window.attachEvent( "onload", ready );
      }
    };
    bind();
  }
  var dispatchEvent = function(obj, type, bubble, canCancel){
    if(bubble == undefined){
      bubble = true;
    }
    if(canCancel == undefined){
      canCancel = true;
    }
    if(document.createEvent){
      var e = document.createEvent('HTMLEvents');
      if(e.initEvent){
        e.initEvent(type, bubble, canCancel);
      }
      if(obj.dispatchEvent){
        obj.dispatchEvent(e);
      }
    } else if(obj.fireEvent){
      obj.fireEvent('on'+type);
    }
  };
  var setData = function(obj, data){
    for(var prop in data){
      obj.setAttribute('data-'+prop, data[prop]);
    }
  };
  var getData = function(obj){
    var data = {};
    for(var i=0; i<obj.attributes.length; i++){
      if(obj.attributes[i].nodeName.indexOf('data-')==0){
        data[obj.attributes[i].nodeName.split("data-")[1]] = obj.attributes[i].nodeValue;
      }
    }
    return data;
  };
  var randId = function(){
    return "rand_"+Math.random().toString().replace('.','');
  };
  var validElementId = function(element){
    if(element.id){
      return element.id;
    } else {
      element.id = randId();
      return element.id;
    }
  };
  if(!document.getElementsByClassName){
    document.getElementsByClassName = function(className, parentElement) {
      if (Prototype.BrowserFeatures.XPath) {
        var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
        return document._getElementsByXPath(q, parentElement);
      } else {
        var children = ($(parentElement) || document.body).getElementsByTagName('*');
        var elements = [], child;
        for (var i = 0, length = children.length; i < length; i++) {
          child = children[i];
          if (Element.hasClassName(child, className))
            elements.push(Element.extend(child));
        }
        return elements;
      }
    };
  }