function showObjectById(ID) {

	var obj = null;

	if (document.getElementById) {
	
		obj = document.getElementById(ID);
		obj.style.visibility = 'visible';
	}
	
	return obj;

}

function showObject(obj) {

	obj.style.visibility = 'visible';

	return obj;

}

function showObject(obj) {

	if (obj != null) {

		obj.style.visibility = 'visible';
	
	}
	
	return obj;

}

function hideObjectById(ID) {

	var obj = null;

	if (document.getElementById) {
	
		obj = document.getElementById(ID);
		obj.style.visibility = 'hidden';
		
	}
	
	return obj;

}

function hideObject(obj) {

	if (obj != null) {

		obj.style.visibility = 'hidden';
	
	}

	return obj;

}

function getObjectById(ID) {

	var obj = null;

	if (document.getElementById) {
	
		obj = document.getElementById(ID);
		
	}
	
	return obj;

}

function swapImageById(ID, imageUrl)
{

	var obj = document.getElementById(ID);
	
	if(obj != null && obj.src)
	{
	
		obj.src = imageUrl;
	
	}

}

// variables
var _dropdownMenuTag;

function initDropdownMenu(menuId, buttonTag, dropdownMenuTag)
{

	// set dropdown menu tag
	_dropdownMenuTag = dropdownMenuTag;

	var objButtonCollection = document.getElementById(menuId).getElementsByTagName(buttonTag);        
	for(var i = 0; i < objButtonCollection.length; i++)
	{        
		var objButton = objButtonCollection[i];        
		for(var j = 0; j < objButton.childNodes.length; j++)
		{
			if(objButton.childNodes.item(j).nodeName == dropdownMenuTag)
			{
				objButton.onmouseover=showDropdownMenu;
				objButton.onmouseout=hideDropdownMenu;
			}
		}
	}
}

function showDropdownMenu()
{
	var objThis = this;	

	for(var i = 0; i < objThis.childNodes.length; i++)
	{
		if(objThis.childNodes.item(i).nodeName == _dropdownMenuTag)			
		{							
			objThis.childNodes.item(i).style.display = "block";
			break;            
		}		
	}

}

function hideDropdownMenu()
{								
	var objThis = this;	
	
	for(var i = 0; i  < objThis.childNodes.length; i++)			
	{
		if(objThis.childNodes.item(i).nodeName == _dropdownMenuTag)
		{				
			objThis.childNodes.item(i).style.display = "none";			
			break;
		}			
	}	
}

function openWindowOnChange(event, list, reset, ignoreIndex)
{

	//var list = event.srcElement;
	//var list = this;
	
	if(list.selectedIndex != ignoreIndex && list.options.item(list.selectedIndex).value != "")
	{
	
		eval("window.open(" + list.options.item(list.selectedIndex).value + ")");
	
	}
	
	if(reset)
	{
	
		list.selectedIndex = 0;
	
	}

}

function goToUrlOnChange(defaultUrl, urlBase, defaultStartIndex, defaultEndIndex)
{

	//var list = event.srcElement;
	var list = this;
	
	if(list.selectedIndex >= defaultStartIndex && list.selectedIndex <= defaultEndIndex)
	{
	
		window.location = defaultUrl;
	
	}
	else
	{
	
		window.location = urlBase + list.options.item(list.selectedIndex).value;
	
	}

}

document.observe("dom:loaded", function() {

$$("div.highlights").each(function(container) {

    var dur = null;
    var classNames = container.className.split(" ");
    for (var i = 0; i < classNames.length; i++) {
        if (classNames[i].search(/duration-[0-9]+$/i) >= 0) {
            dur = parseInt(classNames[i].substr(9));
            break;
        }
    }
    
    var list = container.down("ul");
    var ads = list.select("li");
    var count = ads.length;    
    if(count <= 1) {
        return;
    }
    
    var startIndex = 0;
    for(var i = 0; i < count; i++) {
        if(ads[i].visible()) {
            startIndex = i;
            break;
        }
    }
    
    var getHeight = function(item) {
        return item.offsetHeight;
    };
    list.setStyle({"height":ads.max(getHeight)+"px"}).makePositioned();
    var top = ads[0].positionedOffset().top;
    ads.invoke("hide");

    var util = {
        selectedIndex:-1,
        duration: dur || 12,
        navItems:[],
        lastTimeout:null,
        nextItem:function() {
            util.selectItemByIndex(util.selectedIndex + 1);
        },
        previousItem:function() {
            util.selectItemByIndex(util.selectedIndex - 1);
        },
        selectItemByOffset:function(offset) {
            util.selectItemByIndex(util.selectedIndex + offset);
        },
        selectItemByIndex:function(index, noFade) {
            
            if(util.lastTimeout != null) {
                window.clearTimeout(util.lastTimeout);
                util.lastTimeout = null;
            }
            // schedule next one
            util.lastTimeout = util.nextItem.delay(util.duration);
            
            var previousIndex = util.selectedIndex;
            if(!index && index != 0) {
                index = util.selectedIndex + 1;
            }
            if(index < 0) {
                index = count - 1;
            }
            if(index >= count) {
                index = 0;
            }
            if(index == previousIndex) {
                return;
            }
            util.navItems.invoke("removeClassName", "selected");
            util.navItems[index].addClassName("selected");
            if(window.Effect  && !noFade) {
                if(ads[previousIndex]) {
                    ads[previousIndex].style.position = "absolute";
                    ads[previousIndex].style.top = top + "px";
                    Effect.Fade(ads[previousIndex]);
                }
                ads[index].style.top = "";
                ads[index].style.position = "relative";
                Effect.Appear(ads[index]);
                
            } else {
                ads[index].show();
                if(ads[previousIndex]) {
                    ads[previousIndex].hide();
                }
            }
            util.selectedIndex = index;

        }
    };

    var itemNav = new Element("ul").addClassName("highlights-item-menu");
    for(var i=0, len=count; i<len; i++) {
        var height = ads[i].offsetHeight
        var navItem = new Element("li");
        var navAnchor = new Element("a", { href:"#" }).update(i + 1);
        navItem.insert(navAnchor.observe("click", function(clickEvent, index) {
            clickEvent.preventDefault();
            util.selectItemByIndex(index);
        }.bindAsEventListener(navAnchor, i)));
        itemNav.insert(navItem);
        util.navItems.push(navItem);
    }
    
    var nextPrev = [ -1, 1 ];
    //var nextPrevNav = new Element("ul").addClassName("highlights-direction-menu");
    for(var i=0, len=nextPrev.length; i<len; i++) {
        var navItem = new Element("li").addClassName(nextPrev[i] < 0 ? "prev" : "next");
        var navAnchor = new Element("a", { href:"#" }).update(nextPrev[i] < 0 ? "Previous" : "Next");
        navItem.insert(navAnchor.observe("click", function(clickEvent, offset) {
            clickEvent.preventDefault();
            util.selectItemByOffset(offset);
        }.bindAsEventListener(navAnchor, nextPrev[i])));
        itemNav.insert(nextPrev[i] < 0 ? {top:navItem} : navItem);
        
    }
    
    list.insert({after:itemNav});
    
    //show random
    
    //util.selectItemByIndex(startIndex, true);
    util.selectItemByIndex(0, true);

});

});