function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function hideArticles() {
	var articles= getElementsByClass("blah", document, "div");
	//var articles = galleryItems.getElementsByTagName("div");
		for (var i=0; i < articles.length; i++) {
			articles[i].style.display = "none";
		}
}



function showArticle(whatArticle) {
	var source = whatArticle.getAttribute("title");
	var article = document.getElementById(source);
	article.style.display = "block";
}

function prepareLinks() {
document.getElementById("galleryitems").style.display = "block";
	var thumbs = document.getElementById("thumbs");
	var links = thumbs.getElementsByTagName("a");
		for (var i=0; i < links.length; i++) {
			links[i].onclick = function() {
				var tempo = document.getElementById("temptext");
				tempo.style.display = "none";
				hideArticles();
				showArticle(this);
				return false;
			}
		}
}

function customLight() {
	var galleryItems = document.getElementById("galleryitems");
	var links = galleryItems.getElementsByTagName("a");
		for (var i=0; i < links.length; i++) {
			var lightRel = links[i].getAttribute("rel");
			if (lightRel == "lightbox") {				
			var theLink = links[i].getAttribute("title");
			var appendage = "http://www.artystafineart.co.uk/images/"+theLink+".jpg";
			links[i].setAttribute("href", appendage);
		}
	}
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\\\s)"+searchClass+"(\\\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}


function close1() {
	//var galleryItems = document.getElementById("galleryitems");
	var thumbs = getElementsByClass("closeup1", document, "img");
		for (var k=0; k < thumbs.length; k++) {
			var theThumb = thumbs[k].getAttribute("title");
				if (theThumb.length == 0) {
				 	thumbs[k].style.display = "none";
					thumbs[k].parentNode.style.display = "none;"
					} else {
					var appendage = "http://www.artystafineart.co.uk/images/"+theThumb+"t.jpg";
					thumbs[k].setAttribute("src", appendage);	
					}
		}
}

function close2() {
	//var galleryItems = document.getElementById("galleryitems");
	var thumbs = getElementsByClass("closeup2", document, "img");
		for (var k=0; k < thumbs.length; k++) {
			var theThumb = thumbs[k].getAttribute("title");
				if (theThumb.length == 0) {
				 	thumbs[k].style.display = "none";
					thumbs[k].parentNode.style.display = "none;"
					} else {
					var appendage = "http://www.artystafineart.co.uk/images/"+theThumb+"t.jpg";
					thumbs[k].setAttribute("src", appendage);	
					}
		}
}



addLoadEvent(hideArticles);
addLoadEvent(prepareLinks);
addLoadEvent(customLight);
addLoadEvent(close1);
addLoadEvent(close2);