function getElementsByClassName(strClass, strTag, objContElm) {
  strTag = strTag || "*";
  objContElm = objContElm || document;
  var objColl = (strTag == '*' && document.all && !window.opera) ? document.all : objContElm.getElementsByTagName(strTag);
  var arr = new Array();
  var delim = strClass.indexOf('|') != -1  ? '|' : ' ';
  var arrClass = strClass.split(delim);
  for (var i = 0, j = objColl.length; i < j; i++) {
    var arrObjClass = objColl[i].className.split(' ');
    if (delim == ' ' && arrClass.length > arrObjClass.length) continue;
    var c = 0;
    comparisonLoop:
    for (var k = 0, l = arrObjClass.length; k < l; k++) {
      for (var m = 0, n = arrClass.length; m < n; m++) {
        if (arrClass[m] == arrObjClass[k]) c++;
        if (( delim == '|' && c == 1) || (delim == ' ' && c == arrClass.length)) {
          arr.push(objColl[i]);
          break comparisonLoop;
        }
      }
    }
  }
  return arr;
}

// To cover IE 5.0's lack of the push method
Array.prototype.push = function(value) {
  this[this.length] = value;
}

var mapMaker = {
	offsetX: 10, // tooltip X offset
	offsetY: 0,  // tooltip Y offset
	element: false,
	DLs:     false,
	DTs:     false,
	on:      false,
	/* constructor - sets events */
	init: function(){
		var i=0;
		var ii=0;
		var currentLocation = 0;
		mapMaker.DLs = getElementsByClassName('plan', 'dl'); //document.getElementsByTagName('dl');
		mapMaker.DTs = getElementsByClassName('plan', 'dt'); //document.getElementsByTagName('dt');
		// only loop thru items once
		if( mapMaker.on == false ){
			//loop through each DL on page
			while (mapMaker.DLs.length > i) {
				//only affect DLs with a class of 'plan'
				if (mapMaker.DLs[i].className == 'plan'){
					//change map DL class, this way map is text only without javascript enabled
					mapMaker.DLs[i].className = 'plan on';
					//strip whitespace
					mapMaker.stripWhitespace(mapMaker.DLs[i]);
					mapMaker.stripWhitespace(mapMaker.DTs[i]);
					// loop thru all DT elements
					while (mapMaker.DTs.length > ii){
						//current Location
						currentLocation = mapMaker.DTs[ii].firstChild;
						// add events to links
						mapMaker.addEvt(currentLocation,'mouseover',mapMaker.showTooltip);//displays tooltip on mouse over
						mapMaker.addEvt(currentLocation,'mouseout',mapMaker.hideTooltip);//hide tooltip on mouse out
						mapMaker.addEvt(currentLocation,'focus',mapMaker.showTooltip);//display tooltip on focus, for added keyboard accessibility
						mapMaker.addEvt(currentLocation,'blur',mapMaker.hideTooltip);//hide tooltip on focus, for added keyboard accessibility
						ii++;
					};
					ii=0;
				};
				i++;
			};
			mapMaker.on = true;
		};
	},
	/* SHOW TOOLTIP */
	showTooltip: function() {
		var evt = this;
		var i = 0;
		//Find DD to display - based on currently hovered anchor move to parent DT then next sibling DD
		var objid = evt.parentNode.nextSibling;
		mapMaker.element = objid;//set for the hideTooltip
		//get width and height of background map
		var mapWidth  = objid.parentNode.offsetWidth;
		var mapHeight = objid.parentNode.offsetHeight;
		//get width and height of the DD
		var toopTipWidth = objid.offsetWidth;
		var toopTipHeight = objid.offsetHeight;
		var largeur = evt.offsetWidth;
		//figure out where tooltip should be places based on point location
		var newX = evt.offsetLeft + largeur/2 + mapMaker.offsetX;
		var newY = evt.offsetTop + mapMaker.offsetY;
		objid.style.left = newX + 'px';
		objid.style.top = newY + 'px';
	},
	/* HIDE TOOLTIP */
	hideTooltip: function() {
		mapMaker.element.style.left = '-9999px';
	},
	addEvt: function(element, type, handler) {
		// assign each event handler a unique ID
		if (!handler.$$guid) handler.$$guid = mapMaker.addEvt.guid++;
		// create a hash table of event types for the element
		if (!element.events) element.events = {};
		// create a hash table of event handlers for each element/event pair
		var handlers = element.events[type];
		if (!handlers) {
			handlers = element.events[type] = {};
			// store the existing event handler (if there is one)
			if (element["on" + type]) {
				handlers[0] = element["on" + type];
			};
		};
		// store the event handler in the hash table
		handlers[handler.$$guid] = handler;
		// assign a global event handler to do all the work
		element["on" + type] = mapMaker.handleEvent;
	},
	handleEvent: function(event) {
		var returnValue = true;
		// grab the event object (IE uses a global event object)
		event = event || mapMaker.fixEvent(window.event);
		// get a reference to the hash table of event handlers
		var handlers = this.events[event.type];
		// execute each event handler
		for (var i in handlers) {
			this.$$handleEvent = handlers[i];
			if (this.$$handleEvent(event) === false) {
				returnValue = false;
			};
		};
		return returnValue;
	},
	fixEvent: function(event) {
		// add W3C standard event methods
		event.preventDefault = mapMaker.fixEvent.preventDefault;
		event.stopPropagation = mapMaker.fixEvent.stopPropagation;
		return event;
	},
	stripWhitespace: function( el ){
		for(var i = 0; i < el.childNodes.length; i++){
			var node = el.childNodes[i];
			if( node.nodeType == 3 && !/\S/.test(node.nodeValue)) {
				node.parentNode.removeChild(node);
			};
		};
	}
};
mapMaker.fixEvent.preventDefault = function() {this.returnValue = false;};
mapMaker.fixEvent.stopPropagation = function() {this.cancelBubble = true;};
mapMaker.addEvt.guid = 1;


window.addEventListener?window.addEventListener("load",mapMaker.init,false):window.attachEvent("onload",mapMaker.init);