// GENERIC ADDEVENT =========================

function addEvent(obj, evType, fn) {
 if (obj.addEventListener) { obj.addEventListener(evType, fn, false);  return true; }
 else if (obj.attachEvent) { var r = obj.attachEvent("on"+evType, fn); return r;    }
 else                      { return false; }
}


// ROLLOVERS ================================

var imgz = new Array
var origSrc = ''
var rollSrc = ''

function rollinit() {
  if (document.getElementsByTagName) { var x = document.getElementsByTagName('img'); }
  else if (document.all.tags) { var x = document.all.tags('img'); }
  else { return false; }
  for (var i=0; i<x.length; i++) {
    if (x[i].className.substring(0,5) == 'roll:') {
      rollsrc = x[i].className.substring(5,x[i].className.length);
      if ( rollsrc > '' )  {
        imgz[i]=new Image; imgz[i].src = rollsrc;
        x[i].onmouseover = function () { origSrc=this.src; this.src=this.className.substring(5,this.className.length); }
        x[i].onmouseout  = function () { if(typeof(origSrc)!='undefined' && origSrc > '') {this.src=origSrc; } }
      }
    }
  }
}


// LEFT MENU ================================

function menuinit() {
  o=document.getElementById('lmenu');
  if (document.getElementsByTagName) { var menulistitems = o.getElementsByTagName('li'); }
  else { return false; }
  for (var i=0; i<menulistitems.length; i++) {
    innerlists = menulistitems[i].getElementsByTagName('ul');
    if ( innerlists.length > 0 ) {
      thisA = menulistitems[i].childNodes[0];
      thisA.onclick = function () { menutoggle(this); return false; }
    }
  }
}

function menutoggle(thisA) {
  parentLi = thisA.parentNode;
  targetlist = parentLi.getElementsByTagName('ul')[0];
  if ( targetlist.style.display == 'block' ) { targetlist.style.display = 'none'; } else { targetlist.style.display = 'block'; }
}

/*
addEvent(window, 'load', menuinit);
*/

function toggleSchoolsMenu() {
  o=document.getElementById('schoolsMenu');
  if (o && o.className == 'show') { o.className = 'hide'; } else { o.className = 'show'; }
  return false;
}

// VALIDATION STUFF

function validateSubscribe() {
  o = document.getElementById('SName');      if ( !o || o.value == '' ) { alert('Please complete name.');           return false; }
  o = document.getElementById('EMail');      if ( !o || o.value == '' ) { alert('Please complete email address.');  return false; }
  if ( !(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.((\w{2,3})|(aero|coop|info|museum|name)))+$/.test(o.value)) )
    { alert('Invalid email address!');  return false; }
}