/* 
STATUS: CHECKED
TODO: maybe add some comments
*/


function imageObject() {
	this.htmlContent = "";
	this.targetUrl = "";
	this.clickAction = "";
}

function setSelectedGallery(galleryID,numberOfImages){
	selectedGalleryID = galleryID
	n=0;
	populateGallery(selectedGalleryID,numberOfImages)
}

function nextFour(articleID,numberOfImages) {
	n+=numberOfImages
	populateGallery(articleID,numberOfImages);
}

function previousFour(articleID,numberOfImages) {
	if(n>0) {
		n-=numberOfImages
		populateGallery(articleID,numberOfImages);
	}
}

function populateGallery(articleID,numberOfImages){
	for(var i=0;i<numberOfImages;i++){
		if(i == 0){
			if(n == 0){
				document.getElementById("picturebarBack").style.visibility="hidden";
			}else{
				document.getElementById("picturebarBack").style.visibility="visible";

			}
		}else if(i == (numberOfImages-1)){
			if((n+numberOfImages) < foto[articleID].length){
				document.getElementById("picturebarForward").style.visibility="visible";
			}else{
				document.getElementById("picturebarForward").style.visibility="hidden";
			}
		}
		
		try
		{
			document.getElementById("foto" + i).innerHTML = foto[articleID][n+i].htmlContent;
			var clickActionVar = foto[articleID][n+i].clickAction;
			
			if(foto[articleID][n+i].targetUrl != ""){
				document.getElementById("fotoLink" + i).href = foto[articleID][n+i].targetUrl;
			}

            if(clickActionVar) {
                if (window.attachEvent) {
                     document.getElementById("fotoLink" + i).onclick = function attachedEvent() { eval(clickActionVar); };
                } else {
                document.getElementById("fotoLink" + i).setAttribute("onClick", foto[articleID][n+i].clickAction);
                }
            }

            document.getElementById("fotoLink" + i).style.visibility = 'visible';
	
		}
		catch(err)
		{
			//alert("err = " + err.description);
			document.getElementById("foto" + i).innerHTML = "";
			document.getElementById("fotoLink" + i).href = "";
			document.getElementById("fotoLink" + i).onclick = "";
			document.getElementById("fotoLink" + i).style.visibility = 'hidden';
		}
	}
}

function switchTabsPictureBar(obj) {
	tabsObj = findParentNodeByTagName(obj, "UL");
	checkObj = findParentNodeByTagName(obj, "LI");

	for (i=0; i<tabsObj.childNodes.length; i++) {

		if(checkObj == tabsObj.childNodes[i])
			tabsObj.childNodes[i].className = 'selected';
		else
			tabsObj.childNodes[i].className = '';
	}
}