// script based on tutorial taken from 
// DOM Scripting: Web Design with JavaScript and the Document Object Model
// by Jeremy Keith ISBN: 1590595335

function stripeList() {
var list = document.getElementById("stripe");
if(list != null){
var items = list.getElementsByTagName("li");
var odd = false;
for (var i=0; i<items.length; i++) {
    if (odd == true) {
        items[i].className = "odd";
        odd = false;
    } else {
        odd = true;
    }
}
}
}

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 addClass(element,value) {
  if (!element.className) {
    element.className = value;
  } else {
    newClassName = element.className;
    newClassName+= " ";
    newClassName+= value;
    element.className = newClassName;
  }
}
addLoadEvent(stripeList);
addLoadEvent(stripeTables);
addLoadEvent(highlightRows);