// JavaScript Document
/* 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/en
Licensed under: U.S. Copyright */


/*======================================================================
  Javascript Menu 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.MenuItem = function(text, link, cssClass)
    {
        this.text = text;
        this.link = link;
        this.cssClass = cssClass;
    };

		 Scl.Menu = function(menuWidth)
		 {
		     var instance = this;
		     var menuDiv;
		     var menuItems = new Array();
		     var dockElement;
		     var left = 0;
		     var top = 0;
		     var width = menuWidth ? menuWidth : 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.menuCssClass = 'menu';
		     this.menuItemCssClass = 'menuItem';
		     this.rightToLeft = false;
		     this.bottomToTop = false;
		     this.hideTimeOut = 120;

		 		 this.addItem = function(text, link, cssClass)
		 		 {
		 		     menuItems.push(new Scl.MenuItem(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(hideMenu, 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(menuDiv == null)
		 		     {
		 		         createMenu();
		 		     }
		 		 };

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

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

		         // Asignar para la animacion
		         left = x;
		         top = y;

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

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

		 		 function createMenu()
		     {
            menuDiv = document.createElement('div');
            menuDiv.style.position = 'absolute';

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

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

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

		         // Add items
		         for(var i=0; i< menuItems.length; i++)
		         {
		             var menuItemDiv = createMenuItem(menuItems[i]);
                innerDiv.appendChild(menuItemDiv);
		         }

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

		         height = menuDiv.offsetHeight;
		 		 };

		 		 function createMenuItem(menuItem)
		     {
            var menuItemDiv = document.createElement('div');
            menuItemDiv.className = menuItem.cssClass != null ? menuItem.cssClass : instance.menuItemCssClass;

            if(menuItem.link != null)
            {
                menuItemDiv.link = menuItem.link; // Crear la propiedad con el link para cada elemento
                menuItemDiv.onclick = function(){ window.location = menuItem.link; };
                var link = document.createElement('a');
                link.setAttribute('href', menuItem.link);
                link.appendChild(document.createTextNode(menuItem.text));
                menuItemDiv.appendChild(link);
            }

            return menuItemDiv;
		 		 };

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

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

		             default:
		 		             startAnimation(parseStyle(menuDiv.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;
		 		     }

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

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

		         fullVisible = false;

		         clearInterval(animationThread);

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

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

            var strHeight = menuDiv.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
		 		         {
		 		             menuDiv.style.display = 'none';
		 		         }
            }
            else
            {
                animationHeight += showing ? instance.animationStep : -instance.animationStep;

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

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

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