/* contains:
linkPreview.js
DOMassistant
Virtual Tour
*/

/* ---- linkPreview.js ---- */
addEvent(window, 'load', linkPreview);
function addEvent(obj, evType, fn){if (obj.addEventListener){obj.addEventListener(evType, fn, false);return true;}else if (obj.attachEvent){var r = obj.attachEvent("on"+evType, fn);return r;}else {return false;}}
function linkPreview(){
	var links = document.getElementsByTagName("a");
	for (i=0; i<links.length; i++){
		var currentLink = links[i];
		var images = currentLink.getElementsByTagName("img");
		if (images.length == 0){
			var linkHref = currentLink.href;
			if (linkHref.match(/amazon.com/)){append(currentLink, "amazon");} else {checkLinks(linkHref, currentLink)}
		}
	}
}
function checkLinks(linkHref, currentLink){
	var linkHrefParts = linkHref.split(".");
	var extension = linkHrefParts[linkHrefParts.length - 1];
	extension = extension.replace("/","");
	if (extension in {doc:1, mp3:1, pdf:1, ppt:1, txt:1, wmv:1, xml:1, xls:1, zip:1}){append(currentLink, extension);}
}
function append(currentLink, extension){var span = document.createElement('span');currentLink.parentNode.insertBefore(span,currentLink.nextSibling);span.className = extension;}


/* ---- DOMassistant ---- */
DOMAssistant.DOMReady(prepareGallery);

/* Virtual Tour */
function prepareGallery() {
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;
	if (!document.getElementById("tour")) return false;
	var gallery = document.getElementById("tour");
	var links = gallery.getElementsByTagName("a");
	for ( var i=0; i < links.length; i++) {
		links[i].onclick = function() {
			return showPic(this);
		}
	}
}
function showPic (whichpic) {
	if (!document.getElementById) return true;
	document.getElementById('slide').src = whichpic.href;
	return false;
}