// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults

// Admin visibility solution compatible with page caching from:
// http://blog.maxdunn.com/articles/2006/09/16/ruby-on-rails-advanced-page-caching

function isAdmin() {
  return (readCookie('role') == 'admin')
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

function showClass(name) {
    
  allNodes = document.getElementsByClassName(name);
  for(i = 0; i < allNodes.length; i++) {
    Element.show(allNodes[i]);
  } 
}

function toggleTreeChildren(pageId) {
  buttonId = "Page" + pageId + "TreeButton"
  Element.toggle("Page" + pageId + "TreeList")
  if ($(buttonId).src.match("node-open")) {
    $(buttonId).src = $(buttonId).src.replace(/open/, "closed")
    $(buttonId).title = "Show Children"
  } else {
    $(buttonId).src = $(buttonId).src.replace(/closed/, "open")
    $(buttonId).title = "Hide Children"
  }
}