// Global JavaScript Document

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}

function addClass(element,value) {
  if (!element.className) {
    element.className = value;
  } else {
    newClassName = element.className;
    newClassName+= " ";
    newClassName+= value;
    element.className = newClassName;
  }
}

function stripeTables() {
  if (!document.getElementsByTagName) return false;
  var tables = document.getElementsByTagName("table");
  for (var i=0; i<tables.length; i++) {
    var odd = false;
    var rows = tables[i].getElementsByTagName("tr");
    for (var j=0; j<rows.length; j++) {
      if (odd == true) {
        addClass(rows[j],"odd");
        odd = false;
      } else {
        odd = true;
      }
    }
  }
}

function highlightRows() {
  if(!document.getElementsByTagName) return false;
  var rows = document.getElementsByTagName("tr");
  for (var i=0; i<rows.length; i++) {
    rows[i].oldClassName = rows[i].className
    rows[i].onmouseover = function() {
      addClass(this,"highlight");
    }
    rows[i].onmouseout = function() {
      this.className = this.oldClassName
    }
  }
}

function displayAbbreviations() {
  if (!document.getElementsByTagName || !document.createElement || !document.createTextNode) return false;
  var abbreviations = document.getElementsByTagName("abbr");
  if (abbreviations.length < 1) return false;
  var defs = new Array();
  for (var i=0; i<abbreviations.length; i++) {
    var current_abbr = abbreviations[i];
    if (current_abbr.childNodes.length < 1) continue;
    var definition = current_abbr.getAttribute("title");
    var key = current_abbr.lastChild.nodeValue;
    defs[key] = definition;
  }
  var dlist = document.createElement("dl");
  for (key in defs) {
    var definition = defs[key];
    var dtitle = document.createElement("dt");
    var dtitle_text = document.createTextNode(key);
    dtitle.appendChild(dtitle_text);
    var ddesc = document.createElement("dd");
    var ddesc_text = document.createTextNode(definition);
    ddesc.appendChild(ddesc_text);
    dlist.appendChild(dtitle);
    dlist.appendChild(ddesc);
  }
  if (dlist.childNodes.length < 1) return false;
  var header = document.createElement("h2");
  var header_text = document.createTextNode("Abbreviations");
  header.appendChild(header_text);
  document.getElementById("Abbreviations").appendChild(header);
  document.getElementById("Abbreviations").appendChild(dlist);
}

function displayCitations() {
  if (!document.getElementsByTagName || !document.createElement || !document.createTextNode) return false;
  var quotes = document.getElementsByTagName("blockquote");
  for (var i=0; i<quotes.length; i++) {
    if (!quotes[i].hasAttribute("cite")) continue;
    var url = quotes[i].getAttribute("cite");
    var quoteChildren = quotes[i].getElementsByTagName('*');
    if (quoteChildren.length < 1) continue;
    var elem = quoteChildren[quoteChildren.length - 1];
    var link = document.createElement("a");
    var link_text = document.createTextNode("source");
    link.appendChild(link_text);
    link.setAttribute("href",url);
    var superscript = document.createElement("sup");
    superscript.appendChild(link);
    elem.appendChild(superscript);
  }
}

function nofollowLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "nofollow")
     anchor.target = "_blank";
 }
} 

addLoadEvent(stripeTables);
addLoadEvent(highlightRows);
addLoadEvent(displayAbbreviations);
addLoadEvent(displayCitations);
addLoadEvent(nofollowLinks);