/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: SCL Software | http://www.sclsoftware.com/enLicensed under: U.S. Copyright
 */


/*======================================================================
  Javascript menue 1.0
  Copyright (c) 2008 SCL Software (http://www.sclsoftware.com)
  You can use it freely as long as all copyright messages are intact.
======================================================================*/

if (typeof Scl == "undefined")
{
    var Scl = {};
}

(function()
{
    Scl.menueItem = function(text, link, cssClass)
    {
        this.text = text;
        this.link = link;
        this.cssClass = cssClass;
    };

	Scl.menue = function(menueWidth)
	{
	    var instance = this;
	    var menueDiv;
	    var menueItems = new Array();
	    var dockElement;
	    var left = 0;
	    var top = 0;
	    var width = menueWidth ? menueWidth : 200;
	    var height = 0;
	    var hideThread;
	    var fullVisible = false;
	    var animationThread;
	    var animationStart = 0;
	    var animationEnd = 0;
	    var ANIMATION_NONE = 0;
	    var ANIMATION_VERTICAL = 1;
	    this.animationType = ANIMATION_VERTICAL;
	    this.animationSpeed = 10;
	    this.animationStep = 15;
	    this.margin = 0;
	    this.menueCssClass = 'menue';
	    this.menueItemCssClass = 'menueItem';
	    this.rightToLeft = false;
	    this.bottomToTop = false;
	    this.hideTimeOut = 120;

		this.addItem = function(text, link, cssClass)
		{
		    menueItems.push(new Scl.menueItem(text, link, cssClass));
		};

		this.dockTo = function(element)
		{
	        addEvent(window, 'load', function(){ dockToElement(element); }, false);
		};

		this.showAt = function(element)
		{
		    initialize();

	        var position = getPosition(element);
	        position.y += (instance.bottomToTop) ? (height + instance.margin) * -1 : instance.margin + element.offsetHeight;

	        show(position.x, position.y);
		};

		this.showAtPosition = function(x, y)
		{
		    initialize();
		    show(x, y);
		};

		this.hide = function()
		{
		    hideThread = setTimeout(hidemenue, instance.hideTimeOut);
		};

		function dockToElement(element)
		{
		    if(typeof(element) == 'string')
            {
                element = document.getElementById(element);
            }

            dockElement = element;
	        addEvent(element, 'mouseover', showAtDockElement, false);
	        addEvent(element, 'mouseout', instance.hide, false);
		};

		function showAtDockElement()
		{
	        instance.showAt(dockElement);
		};

		function initialize()
		{
		    if(menueDiv == null)
		    {
		        createmenue();
		    }
		};

		function show(x, y)
		{
		    cancelHide();

	        menueDiv.style.left = x + 'px';
	        menueDiv.style.top = y + 'px';

	        // Assign the animation
	        left = x;
	        top = y;

	        switch(instance.animationType)
	        {
	            case ANIMATION_NONE:
		            menueDiv.style.display = 'block';
		            break;

	            default:
		            startAnimation(0, height);
		            break;
	        }
		};

		function createmenue()
	    {
            menueDiv = document.createElement('div');
            menueDiv.style.position = 'absolute';

	        var innerDiv = document.createElement('div');
            menueDiv.appendChild(innerDiv);

            innerDiv.className = instance.menueCssClass;
            innerDiv.style.width = width + 'px';

	        addEvent(menueDiv, 'mouseover', cancelHide, false);
	        addEvent(menueDiv, 'mouseout', instance.hide, false);

	        // Add items
	        for(var i=0; i< menueItems.length; i++)
	        {
	            var menueItemDiv = createmenueItem(menueItems[i]);
                innerDiv.appendChild(menueItemDiv);
	        }

	        // Add to the document
            document.body.appendChild(menueDiv);

	        height = menueDiv.offsetHeight;
		};

		function createmenueItem(menueItem)
	    {
            var menueItemDiv = document.createElement('div');
            menueItemDiv.className = menueItem.cssClass != null ? menueItem.cssClass : instance.menueItemCssClass;

            if(menueItem.link != null)
            {
                menueItemDiv.link = menueItem.link; // Create a link
                menueItem.target = 'hmmm';
                menueItemDiv.onclick = function(){ document.getElementById("hmmm") = menueItem.link; };
                var link = document.createElement('a');
                link.setAttribute('href', menueItem.link);
 				link.setAttribute('target', menueItem.target);
                link.appendChild(document.createTextNode(menueItem.text));
                menueItemDiv.appendChild(link);
            }

            return menueItemDiv;
		};

		function cancelHide()
		{
		    clearTimeout(hideThread);
		    hideThread = null;
		};

		function hidemenue()
		{
		    switch(instance.animationType)
	        {
	            case ANIMATION_NONE:
		            menueDiv.style.display = 'none';
		            break;

	            default:
		            startAnimation(parseStyle(menueDiv.style.height), 0);
		            break;
	        }
		};

		function parseStyle(value)
		{
		    return parseInt(value.substring(0, value.length-2));
		};

		function getPosition(element)
        {
            var posx = 0;
            var posy = 0;

            if (element.offsetParent)
            {
                do
                {
                    posx += element.offsetLeft;
                    posy += element.offsetTop;

                    if (!element.offsetParent)
                    {
                         break;
                    }
                }
                while (element = element.offsetParent)
            }
            else if (element.x)
            {
                posx += element.x;
                posy += element.y;
            }

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

        function addEvent(element, evType, functionName, useCapture)
        {
            if(element.addEventListener)
            {
                element.addEventListener(evType, functionName, useCapture);
            }
            else if(element.attachEvent)
            {
                element.attachEvent('on' + evType , functionName);
            }
            else
            {
                element['on' + evType] = functionName;
            }
        };

		function startAnimation(start, end)
		{
            var showing = end > start;

		    if(showing & fullVisible)
		    {
		        return;
		    }

		    menueDiv.style.zIndex = showing ? 20 : 1;

		    animationStart = start;
		    animationEnd = end;
	        menueDiv.style.overflow = 'hidden';
		    menueDiv.style.display = 'block';
	        menueDiv.style.height = animationStart + 'px';

	        fullVisible = false;

	        clearInterval(animationThread);

            switch(instance.animationType)
	        {
	            case ANIMATION_VERTICAL:
	                if(instance.bottomToTop)
                    {
	                    menueDiv.style.top = (top + height - menueDiv.offsetHeight) + 'px';
	                }
	                animationThread = setInterval(animateVertical, instance.animationSpeed);
		            break;
	        }
		};

        function animateVertical()
        {
            var showing = animationEnd > animationStart;

            var strHeight = menueDiv.style.height;
            var animationHeight = parseInt(strHeight.substring(0, strHeight.length-2));

            if((showing & animationHeight >= animationEnd) || (!showing & animationHeight <= animationEnd))
            {
                clearInterval(animationThread);

		        if(showing)
		        {
		            fullVisible = true;
		        }
		        else
		        {
		            menueDiv.style.display = 'none';
		        }
            }
            else
            {
                animationHeight += showing ? instance.animationStep : -instance.animationStep;

                if((showing & animationHeight > animationEnd) || (!showing & animationHeight < animationEnd))
                {
                    animationHeight = animationEnd;
                }

                menueDiv.style.height = animationHeight + 'px';

                if(instance.bottomToTop)
                {
                    menueDiv.style.top = (top + height - animationHeight) + 'px';
                }
            }
        };
	};
})();