function menusInit() {
	var menus = document.getElementById("navigation").getElementsByTagName("li");
	for (var i = 0; i< menus.length; i++) {
		menus[i].onmouseover=function() {
			this.className+="-over";
			this.parentElement.className = "active";
		}
	
		menus[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("-over\\b"), "");
			this.parentElement.className=this.parentElement.className.replace(new RegExp("active\\b"), "");
		}
	}
}

function setFontSize(size) {
	setActiveStyleSheet(size);
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  return ('small-fonts');
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

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;
}

// this function is need to work around 
// a bug in IE related to element attributes
function hasClass(obj) {
	var result = false;
	if (obj.getAttributeNode("class") != null) {
		result = obj.getAttributeNode("class").value;
	}
	return result;
}   

function stripe () {

	// the flag we'll use to keep track of 
	// whether the current row is odd or even
	var even = false;
	
	// if arguments are provided to specify the colours
	// of the even & odd rows, then use the them;
	// otherwise use the following defaults:
	var evenClass = arguments[1] ? arguments[1] : " evenrow";
	var oddClass = arguments[2] ? arguments[2] : " oddrow";
	
	// obtain a reference to the desired table
	// if no such table exists, abort
	var tables = document.getElementsByTagName("table");
	if (! tables) { return; }
	
	for (var g = 0; g < tables.length; g++) {
	
		// by definition, tables can have more than one tbody
		// element, so we'll have to get the list of child
		// <tbody>s 
		var tbodies = tables[g].getElementsByTagName("tbody");
	
		// and iterate through them...
		for (var h = 0; h < tbodies.length; h++) {
			
			// find all the <tr> elements... 
			var trs = tbodies[h].getElementsByTagName("tr");
			
			// ... and iterate through them
			for (var i = 0; i < trs.length; i++) {
	
				// avoid rows that have a class attribute
				// or backgroundColor style
				if (!hasClass(trs[i]) && ! trs[i].style.backgroundColor) {
	
					// get all the cells in this row...
					var tds = trs[i].getElementsByTagName("td");
					
					// and iterate through them...
					for (var j = 0; j < tds.length; j++) {
	
						var mytd = tds[j];
						
						// avoid cells that have a class attribute
						// or backgroundColor style
						if (! mytd.style.backgroundColor) {
						
							mytd.className += even ? evenClass : oddClass;
						
						}
					}
				}
				// flip from odd to even, or vice-versa
				even =  ! even;
			}
		}
	}
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  menusInit();
  stripe();
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}


var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);