var fadeimages = new Array()
var fadebgcolor = "gray"

////NO need to edit beyond here/////////////
 
var fadearray=new Array() //array to cache fadeshow instances
var fadeclear=new Array() //array to cache corresponding clearinterval pointers
 
var dom=(document.getElementById) //modern dom browsers
var iebrowser=document.all
 
function fadeshow(theimages, fadewidth, fadeheight, borderwidth, delay, pause, displayorder){
	this.pausecheck=pause
	this.mouseovercheck=0
	this.delay=delay
	this.degree=10 //initial opacity degree (10%)
	this.curimageindex=0
	this.nextimageindex=1
	fadearray[fadearray.length]=this
	this.slideshowid=fadearray.length-1
	this.canvasbase="canvas"+this.slideshowid
	this.curcanvas=this.canvasbase+"_0"
	if (typeof displayorder!="undefined")
	theimages.sort(function() {return 0.5 - Math.random();}) //thanks to Mike (aka Mwinter) :)
	this.theimages=theimages
	this.imageborder=parseInt(borderwidth)
	this.postimages=new Array() //preload images
	for (p=0;p<theimages.length;p++){
	this.postimages[p]=new Image()
	this.postimages[p].src=theimages[p][0]
}
 
var fadewidth=fadewidth+this.imageborder*2
var fadeheight=fadeheight+this.imageborder*2
 
if (iebrowser&&dom||dom) //if IE5+ or modern browsers (ie: Firefox)
	document.write('<div id="master'+this.slideshowid+'" style="position:relative;width:'+fadewidth+'px;height:'+fadeheight+'px;overflow:hidden;"><div id="'+this.canvasbase+'_0" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div><div id="'+this.canvasbase+'_1" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div></div>')
	else
	document.write('<div><img name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"></div>')
	 
	if (iebrowser&&dom||dom) //if IE5+ or modern browsers such as Firefox
	this.startit()
	else{
	this.curimageindex++
	setInterval("fadearray["+this.slideshowid+"].rotateimage()", this.delay)
	}
}

function fadepic(obj){
    try
    {
	if (obj.degree<100){
	obj.degree+=10
	if (obj.tempobj.filters && obj.tempobj.filters[0]){
	if (typeof obj.tempobj.filters[0].opacity=="number") //if IE6+
	obj.tempobj.filters[0].opacity=obj.degree
	else //else if IE5.5-
	obj.tempobj.style.filter="alpha(opacity="+obj.degree+")"
	}
	else if (obj.tempobj.style.MozOpacity)
	obj.tempobj.style.MozOpacity=obj.degree/101
	else if (obj.tempobj.style.KhtmlOpacity)
	obj.tempobj.style.KhtmlOpacity=obj.degree/100
	else if (obj.tempobj.style.opacity&&!obj.tempobj.filters)
	obj.tempobj.style.opacity=obj.degree/101
	}
	else{
	clearInterval(fadeclear[obj.slideshowid])
	obj.nextcanvas=(obj.curcanvas==obj.canvasbase+"_0")? obj.canvasbase+"_0" : obj.canvasbase+"_1"
	obj.tempobj=iebrowser? iebrowser[obj.nextcanvas] : document.getElementById(obj.nextcanvas)
	obj.populateslide(obj.tempobj, obj.nextimageindex)
	obj.nextimageindex=(obj.nextimageindex<obj.postimages.length-1)? obj.nextimageindex+1 : 0
	setTimeout("fadearray["+obj.slideshowid+"].rotateimage()", obj.delay)
	}
	}catch(e){}
}
 
fadeshow.prototype.populateslide=function(picobj, picindex){
	var slideHTML=""
	if (this.theimages[picindex][1]!="") //if associated link exists for image
	slideHTML='<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">'
	slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">'
	if (this.theimages[picindex][1]!="") //if associated link exists for image
	slideHTML+='</a>'
	picobj.innerHTML=slideHTML
}
 
 
fadeshow.prototype.rotateimage=function(){
    try
    {
	if (this.pausecheck==1) //if pause onMouseover enabled, cache object
	var cacheobj=this
	if (this.mouseovercheck==1)
	setTimeout(function(){cacheobj.rotateimage()}, 100)
	else if (iebrowser&&dom||dom){
	this.resetit()
	var crossobj=this.tempobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
	crossobj.style.zIndex++
	fadeclear[this.slideshowid]=setInterval("fadepic(fadearray["+this.slideshowid+"])",50)
	this.curcanvas=(this.curcanvas==this.canvasbase+"_0")? this.canvasbase+"_1" : this.canvasbase+"_0"
	}
	else{
	var ns4imgobj=document.images['defaultslide'+this.slideshowid]
	ns4imgobj.src=this.postimages[this.curimageindex].src
	}
	this.curimageindex=(this.curimageindex<this.postimages.length-1)? this.curimageindex+1 : 0
	}
	catch(e){}
}
 
fadeshow.prototype.resetit=function(){
    try
    {
	this.degree=10
	var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
	if (crossobj.filters&&crossobj.filters[0]){
	if (typeof crossobj.filters[0].opacity=="number") //if IE6+
	crossobj.filters(0).opacity=this.degree
	else //else if IE5.5-
	crossobj.style.filter="alpha(opacity="+this.degree+")"
	}
	else if (crossobj.style.MozOpacity)
	crossobj.style.MozOpacity=this.degree/101
	else if (crossobj.style.KhtmlOpacity)
	crossobj.style.KhtmlOpacity=this.degree/100
	else if (crossobj.style.opacity&&!crossobj.filters)
	crossobj.style.opacity=this.degree/101
	}
	catch(e){}
}
 
 
fadeshow.prototype.startit=function(){
    try
    {
	var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
	this.populateslide(crossobj, this.curimageindex)
	if (this.pausecheck==1){ //IF SLIDESHOW SHOULD PAUSE ONMOUSEOVER
	var cacheobj=this
	var crossobjcontainer=iebrowser? iebrowser["master"+this.slideshowid] : document.getElementById("master"+this.slideshowid)
	crossobjcontainer.onmouseover=function(){cacheobj.mouseovercheck=1}
	crossobjcontainer.onmouseout=function(){cacheobj.mouseovercheck=0}
	}
	this.rotateimage()
	}
	catch(e){}
}

var selectedImageIndex = 1;
var largeImages;
var largeImagesArray;

function showMainImage(selectedImage, index, categoryName, divMainImagesId, imgLargeId) {

    if (selectedImage.getAttribute("disabled") == "disabled")
        return;
        
    if (categoryName == "labyrinths") 
    {
        var lblCategoryDescription = document.getElementById(lblCategoryDescriptionId);
        if (index == 1 || index == 2 || index == 5)
            lblCategoryDescription.innerText = "Acrylic on paper, 80X120 cm, 2002-3";
        else
            lblCategoryDescription.innerText = "Acrylic on paper, 80X60 cm, 2002-3";
    }
    
    var divMainImages = document.getElementById(divMainImagesId);
    for (var i = 0; i < divMainImages.childNodes.length; i++)
    {
        divMainImages.childNodes[i].style.display = "none";
    }
    divMainImages.childNodes[index].style.display = "";

    var imgLarge = document.getElementById(imgLargeId);
    if (categoryName == "citymap" && index == 0)
        imgLarge.src = "Images/Paintings/" + categoryName + "/Large/" + parseInt(index + 1) + ".png";
    else
        imgLarge.src = "Images/Paintings/" + categoryName + "/Large/" + parseInt(index + 1) + ".jpg";
    
    resetThumbs(selectedImage.parentNode, categoryName);
    selectedImage.src = "Images/Common/orange.jpg";
    selectedImage.disabled = "disabled";
    
    selectedImageIndex = parseInt(index + 1);
}

function resetThumbs(parentDiv, categoryName) {
    var imageIndex = 1;
    for (var i = 0; i < parentDiv.childNodes.length; i+=2)
    {
        parentDiv.childNodes[i].src = "Images/Paintings/" + categoryName + "/Thumbs/" + imageIndex + ".jpg";
        parentDiv.childNodes[i].setAttribute("disabled", "");
        imageIndex++;
    }
}

function showDetail(lnk, categoryName, divThumbImagesId, imgLargeId, divMainImagesId)
{
    var divThumbImages = document.getElementById(divThumbImagesId);
    lnk.className = lnk.className == "subMenuTitleSelected" ? "" : "subMenuTitleSelected";
    
    var imageIndex = 1;
    for (var i = 0; i < divThumbImages.childNodes.length; i+=2)
    {
        if (lnk.className == "subMenuTitleSelected")
        {
            if (divThumbImages.childNodes[i].src.indexOf("orange.jpg") >= 0)
                divThumbImages.childNodes[i].src = "Images/Common/grey.jpg";

            divThumbImages.childNodes[i].setAttribute("disabled", "disabled");
        }
        else
        {
            if (divThumbImages.childNodes[i].src.indexOf("grey.jpg") < 0)
                divThumbImages.childNodes[i].src = "Images/Paintings/" + categoryName + "/Thumbs/" + imageIndex + ".jpg";
            else
                divThumbImages.childNodes[i].src = "Images/Common/orange.jpg";

            divThumbImages.childNodes[i].setAttribute("disabled", "");
        }
        imageIndex++;
    }
    showDetailsImage(lnk.className == "subMenuTitleSelected", divMainImagesId, categoryName);
}

function showDetailsImage(showImage, divMainImagesId, categoryName)
{
    var divMainImages = document.getElementById(divMainImagesId);
    
    if (showImage)
    {
        if (categoryName == "citymap" && selectedImageIndex == 1)
            divMainImages.childNodes[selectedImageIndex - 1].src = "Images/Paintings/" + categoryName + "/Details/" + selectedImageIndex + ".png";
        else
            divMainImages.childNodes[selectedImageIndex - 1].src = "Images/Paintings/" + categoryName + "/Details/" + selectedImageIndex + ".jpg";
    }
    else
    {
        if (categoryName == "citymap" && selectedImageIndex == 1)
            divMainImages.childNodes[selectedImageIndex - 1].src = "Images/Paintings/" + categoryName + "/Regular/" + selectedImageIndex + ".png";
        else
            divMainImages.childNodes[selectedImageIndex - 1].src = "Images/Paintings/" + categoryName + "/Regular/" + selectedImageIndex + ".jpg";
    }
}

function showLargeImage(index, categoryName) {

    var imgLarge = document.getElementById(imgLargeId);

//    if (categoryName == "citymap" && index == 1) 
//        imgLarge.src = imgSrc = "Images/Paintings/" + categoryName + "/Large/" + index + ".png";
//    else
//        imgLarge.src = imgSrc = "Images/Paintings/" + categoryName + "/Large/" + index + ".jpg";

    imgLarge.style.left = getScreenCenterX() + "px";
    imgLarge.style.top = "80px";

    imgLarge.style.display = "";
    //document.getElementsByTagName("BODY")[0].className = "modalBackground";
    //document.getElementById("tblMain").className = "modalBackground";
    imgLarge.className = "";
}

function closeLargeImage(img) {
    //document.getElementById("tblMain").className = "";
    //document.getElementsByTagName("BODY")[0].className = "";
    img.style.display = "none";
}

function getScreenCenterX() {
    return (document.body.clientWidth) / 4;
}