/* General */

var MACIE5 = (
        navigator.userAgent.indexOf('MSIE 5') != -1
        &&
        navigator.userAgent.indexOf('Mac') != -1
);
var W3CDOM = ( document.getElementsByTagName && document.createElement );

// this function is needed 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;
}

// mmm werkt dit wel zoals ik het wil...
function addEvent(obj, evType, fn)
{ 
	if ( obj && obj.addEventListener)
	{ 
		obj.addEventListener(evType, fn, true); 
		return true; 
	}
	else if ( obj && obj.attachEvent)
	{ 
		var r = obj.attachEvent("on"+evType, fn); 
		return r; 
	}
	else
	{ 
		return false; 
	} 
}

/*** StyleStuff ***/

/** Styleswitching **/

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

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

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

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

*/

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

/** end Styleswitching **/


/* table enhancements */
function checker(table)
{
	var roweven = false;
	var evenColor = arguments[1] ? arguments[1] : "#fff";
	var oddColor = arguments[2] ? arguments[2] : "#eee";
	var border = false;
	if (arguments.length > 2)
	{
		border = true;
		var borderColor = arguments[3];
		table.style.backgroundColor = borderColor;
	}
	
	var tbodies = table.getElementsByTagName("tbody");
	for (var h = 0; h < tbodies.length; h++)
	{
		var trs = tbodies[h].getElementsByTagName("tr");
		for (var i = 0; i < trs.length; i++)
		{
			//if (! hasClass(trs[i]) && ! trs[i].style.backgroundColor)
			if (! trs[i].style.backgroundColor)
			{
				var tds = trs[i].getElementsByTagName("td");
				for (var j = 0; j < tds.length; j++)
				{
					var mytd = tds[j];
		//			if (! hasClass(mytd) ) // && ! mytd.style.backgroundColor)
		//			{ 
						mytd.style.backgroundColor = 
						roweven ? ( j % 2 ? oddColor : evenColor ) : ( j % 2 ? evenColor : oddColor );
		//			}
				}
			}
			roweven =  ! roweven;
		}
	}
}

function inspect(obj)
{
	var str = "";
	for (var i in obj) str += i + ": "+ obj.getAttribute(i) + "\n";
	alert(str);
	return false;
}

function report()
{
	//window.defaultStatus = "width: " + this.offsetWidth;
	//window.defaultStatus = "children: " + this.childNodes.length;
	window.defaultStatus = "blabla: '"+ this.parentNode.offsetWidth +" -- "+ this.offsetWidth +"'";
	//this.parentNode.style.width = '40px';
}

window.defaultStatus='Happy Puzzling Forever';