function $$() {
  return $A(arguments).map(function(expression) {
        return expression.strip().split(/\s+/).inject([null], function(results, expr) {
          var selector = new Selector(expr);
          return results.map(selector.findElements.bind(selector)).flatten();
        });
   }).flatten();
}

function userauth_init(){
    if ($('msg')) {
        Effect.Pulsate ('msg');
        new Effect.Highlight ('msg');
    }
    if ($('groupmsg')) {
        Effect.Pulsate ('groupmsg');
        new Effect.Highlight ('groupmsg');
    }
    if ($('articlemsg')) {
        Effect.Pulsate ('articlemsg');
        new Effect.Highlight ('articlemsg');
    }
}

function toggleArticles() {
    Effect.toggle ('articleholder', 'Blind', {duration:0.4});
}

function toggleApprovedArticles() {
    Effect.toggle ('approvedholder', 'Blind', {duration:0.4});
}

function togglePendingArticles() {
    Effect.toggle ('pendingholder', 'Blind', {duration:0.4});
}

function toggleRejectedArticles() {
    Effect.toggle ('rejectedholder', 'Blind', {duration:0.4});
}

function togglePayments() {
    Effect.toggle ('paymentholder', 'Blind', {duration:0.4});
}

function toggleViewAssignments() {
    Effect.toggle ('assignmentholder', 'Blind', {duration:0.4});
}

function toggleCurrentAssignments() {
    Effect.toggle ('curassignmentholder', 'Blind', {duration:0.4});
}

function toggleUsers() {
    Effect.toggle ('usersholder', 'Blind', {duration:0.4});
}

function toggleGroups() {
    Effect.toggle ('groupsholder', 'Blind', {duration:0.4});
}

function addUser() {
    Effect.toggle ('addUser', 'Blind', {duration:0.4});
}

function addGroup() {
    Effect.toggle ('addGroup', 'Blind', {duration:0.4});
}

function checkMail(email) {
    var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    if (filter.test(email)) {return true;}
    else {return false;}
}

function stripe () {
  var tables = document.getElementsByTagName("table");

  for(var x=0;x!=tables.length;x++){
    var table = tables[x];
    // if it isn't a table, or if it lacks a stripe class, skip it
    if (! table || document.getElementsByClassName("stripe")=="") { return; }

    var tbodies = table.getElementsByTagName("tbody");

    for (var h = 0; h < tbodies.length; h++) {

      var even = true;
      var trs = tbodies[h].getElementsByTagName("tr");

      for (var i = 0; i < trs.length; i++) {
        trs[i].onmouseover=function(){
          this.className += " ruled"; return false
        }
        trs[i].onmouseout=function(){
          this.className = this.className.replace("ruled", ""); return false
        }

        if(even)
          trs[i].className += " even";

        even = !even;
      }
    }
  }
}

function addEvent( obj, type, fn ) {
    if (obj.addEventListener) {
        obj.addEventListener( type, fn, false );
        EventCache.add(obj, type, fn);
    }
    else if (obj.attachEvent) {
        obj["e"+type+fn] = fn;
        obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
        obj.attachEvent( "on"+type, obj[type+fn] );
        EventCache.add(obj, type, fn);
    }
    else {
        obj["on"+type] = obj["e"+type+fn];
    }
}

var EventCache = function(){
    var listEvents = [];
    return {
        listEvents : listEvents,
        add : function(node, sEventName, fHandler){
            listEvents.push(arguments);
        },
        flush : function(){
            var i, item;
            for(i = listEvents.length - 1; i >= 0; i = i - 1){
                item = listEvents[i];
                if(item[0].removeEventListener){
                    item[0].removeEventListener(item[1], item[2], item[3]);
                };
                if(item[1].substring(0, 2) != "on"){
                    item[1] = "on" + item[1];
                };
                if(item[0].detachEvent){
                    item[0].detachEvent(item[1], item[2]);
                };
                item[0][item[1]] = null;
            };
        }
    };
}();

function addRowToTable(tablename)
{
  var tbl = document.getElementById(tablename);
  var lastRow = tbl.rows.length;
  // if there's no header row in the table, then iteration = lastRow + 1
  var iteration = lastRow;
  var row = tbl.insertRow(lastRow);

  var username = row.insertCell(0);
  var group = row.insertCell(1);
  var fullname = row.insertCell(2);
  var email = row.insertCell(3);
  var password = row.insertCell(4);
  var enabled = row.insertCell(5);
  var edit_delete = row.insertCell(6);
}


addEvent(window,'unload',EventCache.flush);
addEvent (window, "load", stripe);
addEvent (window, "load", userauth_init);