/*
Functions:
	$()
	$E()
	addEvent
	getElementsByClass
	toggle
	insertAfter
	Array.prototype.inArray
	getCookie/setCookie/deleteCookie
	Behaviour
	cssQuery
	JSON
	findPos
	returnScrollDimensions
	createEl
	setElStyles
	removeChildNodes
	arrayRemoveDuplicates
	arrayIndexOf
	getParent
	getSize

Other Libraries:

	Top Ten Functions
	http://www.dustindiaz.com/top-ten-javascript/
	
	WCH - Windowed Control Hider - fixes bug of drop downs and Quicktime showing through Flash and absolute positioned divs
	http://www.aplus.co.yu/wch/intro/ 
	
	JavaScript Class driven framework
	http://prototype.conio.net/
	
	Effects library for displaying, dragging, fading
	http://script.aculo.us/  
	
	Lightweight effects for sizing and fading 
	http://moofx.mad4milk.net/

*/



/* addEvent: simplified event attachment
Example: addEvent(body,"load",init);
 */
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}
	
var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

/* window 'load' attachment */
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

/* grab Elements from the DOM by className */
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

/* toggle an element's display */
function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}

/* insert an element after a particular node */
function insertAfter(parent, node, referenceNode) {
	parent.insertBefore(node, referenceNode.nextSibling);
}

/* Array prototype, matches value in array: returns bool */
Array.prototype.inArray = function (value) {
	var i;
	for (i=0; i < this.length; i++) {
		if (this[i] === value) {
			return true;
		}
	}
	return false;
};

/* get, set, and delete cookies */
function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}
	
function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+"="+escape( value ) +
		( ( expires ) ? ";expires="+expires_date.toGMTString() : "" ) + //expires.toGMTString()
		( ( path ) ? ";path=" + path : "" ) +
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}
	
function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + "=" +
			( ( path ) ? ";path=" + path : "") +
			( ( domain ) ? ";domain=" + domain : "" ) +
			";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

/* quick getElement reference */
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

/*
Extension of $() - var elements = $('input','select','textarea'); 
Matches objects in order: ID, className, tagName, set attribute (href), values of attributes
http://www.thewatchmakerproject.com/journal/292/a-better-dollar-function-getelementsbyanything
*/
function $E() {
	var elements = new Array();
	for (var i=0,len=arguments.length;i<len;i++) {
		var element = arguments[i];
		if (typeof element == 'string') {
			var matched = document.getElementById(element);
			if (matched) {
				elements.push(matched);
			} else {
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				var regexp = new RegExp('(^| )'+element+'( |$)');
				for (var i=0,len=allels.length;i<len;i++) if (regexp.test(allels[i].className)) elements.push(allels[i]);
			}
			if (!elements.length) elements = document.getElementsByTagName(element);
			if (!elements.length) {
				elements = new Array();
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				for (var i=0,len=allels.length;i<len;i++) if (allels[i].getAttribute(element)) elements.push(allels[i]);
			}
			if (!elements.length) {
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				for (var i=0,len=allels.length;i<len;i++) if (allels[i].attributes) for (var j=0,lenn=allels[i].attributes.length;j<lenn;j++) if (allels[i].attributes[j].specified) if (allels[i].attributes[j].nodeValue == element) elements.push(allels[i]);
			}
		} else {
			elements.push(element);
		}
	}
	if (elements.length == 1) {
		return elements[0];
	} else {
		return elements;
	}
}




/*
   Behaviour v1.1 by Ben Nolan, June 2005. Based largely on the work
   of Simon Willison (see comments by Simon below).

   Description:
   	
   	Uses css selectors to apply javascript behaviours to enable
   	unobtrusive javascript in html documents.
   	
   Usage:   
   
	var myrules = {
		'b.someclass' : function(element){
			element.onclick = function(){
				alert(this.innerHTML);
			}
		},
		'#someid u' : function(element){
			element.onmouseover = function(){
				this.innerHTML = "BLAH!";
			}
		}
	};
	
	Behaviour.register(myrules);
	
	// Call Behaviour.apply() to re-apply the rules (if you
	// update the dom, etc).

   License:
   
   	This file is entirely BSD licensed.
   	
   More information:
   	
   	http://ripcord.co.nz/behaviour/
   
   
	Modified by Neil M to use cssQuery() instead of document.getElementsBySelector for better CSS 2 and 3 support   
   
*/   

var Behaviour = {
	list : new Array,
	
	register : function(sheet){
		Behaviour.list.push(sheet);
	},
	
	start : function(){
		Behaviour.addLoadEvent(function(){
			Behaviour.apply();
		});
	},
	
	apply : function(){
		for (h=0;sheet=Behaviour.list[h];h++){
			for (selector in sheet){
				list = cssQuery(selector);
				if (!list){
					continue;
				}

				for (i=0;element=list[i];i++){
					sheet[selector](element);
				}
			}
		}
	},
	
	addLoadEvent : function(func){
		var oldonload = window.onload;
	
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				oldonload();
				func();
			}
		}

	}
}


Behaviour.start();



/*
	cssQuery, version 2.0.2 (2005-08-19)
	Copyright: 2004-2005, Dean Edwards (http://dean.edwards.name/)
	License: http://creativecommons.org/licenses/LGPL/2.1/
	http://dean.edwards.name/my/cssQuery/
	Examples:
	cssQuery("div a"); cssQuery("div#divid a.classname"); cssQuery("#testdiv a:first-child"); var tags = cssQuery("a[href='#']");
	a[href],  input[type=checkbox],  p:contains("Search Text")
*/


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/*
	String Serializer for storage and retrieval of JS objects
	http://www.crockford.com/JSON/js.html
	The global object JSON contains two methods.
	
	JSON.stringify(value) takes a JavaScript value and produces a JSON text.
	The value must not be cyclical.
	
	JSON.parse(text) takes a JSON text and produces a JavaScript value. It will
	throw a 'JSONError' exception if there is an error.
*/
var JSON = {
    copyright: '(c)2005 JSON.org',
    license: 'http://www.crockford.com/JSON/license.html',
/*
    Stringify a JavaScript value, producing a JSON text.
*/
    stringify: function (v) {
        var a = [];

/*
    Emit a string.
*/
        function e(s) {
            a[a.length] = s;
        }

/*
    Convert a value.
*/
        function g(x) {
            var c, i, l, v;

            switch (typeof x) {
            case 'object':
                if (x) {
                    if (x instanceof Array) {
                        e('[');
                        l = a.length;
                        for (i = 0; i < x.length; i += 1) {
                            v = x[i];
                            if (typeof v != 'undefined' &&
                                    typeof v != 'function') {
                                if (l < a.length) {
                                    e(',');
                                }
                                g(v);
                            }
                        }
                        e(']');
                        return;
                    } else if (typeof x.valueOf == 'function') {
                        e('{');
                        l = a.length;
                        for (i in x) {
                            v = x[i];
                            if (typeof v != 'undefined' &&
                                    typeof v != 'function' &&
                                    (!v || typeof v != 'object' ||
                                        typeof v.valueOf == 'function')) {
                                if (l < a.length) {
                                    e(',');
                                }
                                g(i);
                                e(':');
                                g(v);
                            }
                        }
                        return e('}');
                    }
                }
                e('null');
                return;
            case 'number':
                e(isFinite(x) ? +x : 'null');
                return;
            case 'string':
                l = x.length;
                e('"');
                for (i = 0; i < l; i += 1) {
                    c = x.charAt(i);
                    if (c >= ' ') {
                        if (c == '\\' || c == '"') {
                            e('\\');
                        }
                        e(c);
                    } else {
                        switch (c) {
                        case '\b':
                            e('\\b');
                            break;
                        case '\f':
                            e('\\f');
                            break;
                        case '\n':
                            e('\\n');
                            break;
                        case '\r':
                            e('\\r');
                            break;
                        case '\t':
                            e('\\t');
                            break;
                        default:
                            c = c.charCodeAt();
                            e('\\u00' + Math.floor(c / 16).toString(16) +
                                (c % 16).toString(16));
                        }
                    }
                }
                e('"');
                return;
            case 'boolean':
                e(String(x));
                return;
            default:
                e('null');
                return;
            }
        }
        g(v);
        return a.join('');
    },
/*
    Parse a JSON text, producing a JavaScript value.
*/
    parse: function (text) {
        return (/^(\s+|[,:{}\[\]]|"(\\["\\\/bfnrtu]|[^\x00-\x1f"\\]+)*"|-?\d+(\.\d*)?([eE][+-]?\d+)?|true|false|null)+$/.test(text)) &&
            eval('(' + text + ')');
    }
};



function findPos(obj)
{

	if (typeof obj == "string") obj = $(obj);

	var x = 0; var y = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			x += obj.offsetLeft;
			y += obj.offsetTop;
			obj = obj.offsetParent;
		}
	}

	return {x:x,y:y};
}

/*
Example: el.onmouseover=Description.show("Text to show"); el.onmouseout=Description.hide();
*/
Description = {
	opac:10,
	toOpac:95,
	step:10,
	interval:5,
	show:function(id,text) {
		Description.removeDiv();
		Description.clearTimer();
		var pos = findPos(id);
		var div = document.createElement("div");
		div.id = "description";
		div.innerHTML = text;
		div.style.left = (pos.x+100)+"px";
		div.style.top = (pos.y+0)+"px";
		div.style.zIndex = 100;
		document.getElementsByTagName("body")[0].appendChild(div)
		Description.setOpac(1);

		var bBottom = document.documentElement.clientHeight+document.documentElement.scrollTop;
		if (pos.y+div.scrollHeight > bBottom-20) {
			div.style.top = (bBottom - div.scrollHeight-20) + "px";
		}

		Description.fadeIn();
	},
	hide:function() {
		Description.clearTimer();
		Description.fadeOut();
	},
	fadeIn:function() {
		if (Description.opac < Description.toOpac) {
			Description.opac+=Description.step;
			Description.setOpac(Description.opac);
			fadeTimer = setTimeout(function() { Description.fadeIn() },Description.interval);
		}	
	},
	fadeOut:function() {
		if (Description.opac >= Description.step) {
			Description.opac-=Description.step;
			Description.setOpac(Description.opac);
			fadeTimer = setTimeout(function() { Description.fadeOut() },Description.interval);
		}	
		else {
			Description.removeDiv();
		}
	},
	setOpac:function(val) {
		Description.opac = val;
		var div = document.getElementById('description');
		if ( div ) {
			div.style.opacity = Math.min(99,this.opac)/100; // FF Flicker with = 1
			div.style.filter = "Alpha(Opacity="+(val)+")";
		}
	},
	clearTimer:function() {
		if (window.fadeTimer) {	clearTimeout(fadeTimer); }
	},
	removeDiv:function() {
		var div = document.getElementById('description');
		if ( div ) {
			div.parentNode.removeChild(div);
		}
	}

}

/*
Find position relative to positioned parent
Example: var pos = findPos(id); var left = pos.x; var top = pos.y;
*/
function findPos(obj)
{

	if (typeof obj == "string") obj = $(obj);

	var x = 0; var y = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			x += obj.offsetLeft;
			y += obj.offsetTop;
			obj = obj.offsetParent;
		}
	}

	return {x:x,y:y};
}


/*
Example: var scrollX = returnScrollDimensions().x;
*/
function returnScrollDimensions() {
	var x=0; var y=0;
	if(document.body.scrollTop != 0) y = document.body.scrollTop;
	if(document.documentElement.scrollTop != 0) y = document.documentElement.scrollTop;

	if(document.body.scrollLeft != 0) x =document.body.scrollTop;
	if(document.documentElement.scrollLeft != 0) x = document.documentElement.scrollLeft;
	return {x:x,y:y};
}



/*
Create Element
Returns reference to created object
Example: var div = createEl({tag:"div",c:"class1 class2",style:"padding: 5px;",otherprop:"value",text:"Inner Text",parent:document.body});
*/

function createEl(props) {
	var el = document.createElement(props.tag);

	for (i in props) {
		switch(i) {
			case "tag":
				break;
			case "text":
				el.appendChild(document.createTextNode(props[i]));
				break;
			case "c": case "classname": case "class":
				el.className = props[i];
				break;
			case "style": case "styles":
				if(document.all && !window.opera) {
					el.style.setAttribute("cssText",props[i]);
				}
				else {
					el.setAttribute("style",props[i]);
				}
				break;
			case "parent":
				if (typeof props[i]=="string")
					props[i] = document.getElementById(props[i]);
				props[i].appendChild(el);
				break;
			default:
				el.setAttribute(i, props[i]);
				break;
		}
	}
	return el;
}



/*
Example: setElStyles(document.getElementById("container"),"border:1px solid black;padding:5px");
*/
function setElStyles(obj,str) {
	if (typeof obj=="string") obj = document.getElementById(obj);
	if(document.all && !window.opera) {
		obj.style.setAttribute("cssText",str);
	}
	else {
		obj.setAttribute("style",str);
	}
}

/*
Example: removeChildNodes("container"); removeChildNodes(document.body);
*/
function removeChildNodes(obj) {
	if (typeof obj=="string") obj = document.getElementById(obj);
	while(obj.firstChild) obj.removeChild(obj.firstChild); // slower than above
}


/*
Example: arr = arrayRemoveDuplicates(arr);
*/
function arrayRemoveDuplicates(arr) {

	var b = [];
	for(var i=0; i<arr.length; i++ ) {
		if(!arrayIndexOf(b,arr[i])) {
			b.push(arr[i]);
		}
	}
	return b;
};

/*
Example: bool = arrayIndexOf(arr,value);
*/
function arrayIndexOf(arr,val) {
	for (var i=0; i<arr.length; i++) {
		if (arr[i] == val) {
			return true;
		}
	}
	return false;
}

/*
Example: row = getParent(el,"tr");
*/
function getParent(el, pTagName) {
    if (el == null)
	return null;
    else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase())	// Gecko bug, supposed to be uppercase
	return el;
    else
	return getParent(el.parentNode, pTagName);
}


function getSize(el)
{
	var x = document.getElementById(el);
	if (x.currentStyle)
		var y = x.currentStyle[styleProp];
	else if (window.getComputedStyle)
		var y = document.defaultView.getComputedStyle(x,null).getPropertyValue(styleProp);
	return y;
}