// written by Dean Edwards, 2005

// with input from Tino Zijdel, Matthias Miller, Diego Perini



// http://dean.edwards.name/weblog/2005/10/add-event/



function addEvent(element, type, handler) {

	if (element.addEventListener) {

		element.addEventListener(type, handler, false);

	} else {

		// assign each event handler a unique ID

		if (!handler.$$guid) handler.$$guid = addEvent.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] = handleEvent;

	}

};

// a counter used to create unique IDs

addEvent.guid = 1;



function removeEvent(element, type, handler) {

	if (element.removeEventListener) {

		element.removeEventListener(type, handler, false);

	} else {

		// delete the event handler from the hash table

		if (element.events && element.events[type]) {

			delete element.events[type][handler.$$guid];

		}

	}

};



function handleEvent(event) {

	var returnValue = true;

	// grab the event object (IE uses a global event object)

	event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || 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;

};



function fixEvent(event) {

	// add W3C standard event methods

	event.preventDefault = fixEvent.preventDefault;

	event.stopPropagation = fixEvent.stopPropagation;

	return event;

};

fixEvent.preventDefault = function() {

	this.returnValue = false;

};

fixEvent.stopPropagation = function() {

	this.cancelBubble = true;

};



//hiding loggin from non-compliant browsers

var console;

if (console == undefined)

console = new function()

{

	this.debug = function(src) {  };

	//this.debug = function(src) { alert("Debug ---\n\n" + src); };

	this.info = function(src) {  };

	//this.info = function(src) { alert("Info ---\n\n" + src); };

	this.warn = function(src) {  };

	//this.warn = function(src) { alert("Warning ---\n\n" + src); };

	this.error = function(src) {  };

	//this.error = function(src) { alert("Error ---\n\n" + src); };



}

/*
    Written by Jonathan Snook, http://www.snook.ca/jonathan
    Add-ons by Robert Nyman, http://www.robertnyman.com
*/

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && document.all)? document.all : 
    oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}