/* contains:
styleswitcher.js
linkPreview.js
*/


/* ---- styleswitcher.js ---- */
function setActiveStyleSheet(title) {var i, a, main;for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {a.disabled = true;if(a.getAttribute("title") == title) a.disabled = false;}}}
function getActiveStyleSheet() {var i, a;for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");}return null;}
function getPreferredStyleSheet() {var i, a;for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {if(a.getAttribute("rel").indexOf("style") != -1&& a.getAttribute("rel").indexOf("alt") == -1&& a.getAttribute("title")) return a.getAttribute("title");}return null;}
function createCookie(name,value,days) {if (days) {var date = new Date();date.setTime(date.getTime()+(days*24*60*60*1000));var expires = "; expires="+date.toGMTString();}else expires = "";document.cookie = name+"="+value+expires+"; path=/";}
function readCookie(name) {var nameEQ = name + "=";var ca = document.cookie.split(';');for(var i=0;i < ca.length;i++) {var c = ca[i];while (c.charAt(0)==' ') c = c.substring(1,c.length);if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);}return null;}
window.onload = function(e) {var cookie = readCookie("style");var title = cookie ? cookie : getPreferredStyleSheet();setActiveStyleSheet(title);}
window.onunload = function(e) {var title = getActiveStyleSheet();createCookie("style", title, 365);}
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

/* ---- 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');span.innerHTML = "&nbsp;";currentLink.parentNode.insertBefore(span,currentLink.nextSibling);span.className = extension;}