$(document).ready(function() {
	// Repair anchors:
	if (document.getElementsByTagName) {
		var anchors = document.getElementsByTagName("a"); 
		
		for (var i = 0; i < anchors.length; i++) {
			var anchor = anchors[i];
			
			if (anchor.getAttribute("title") == null || anchor.getAttribute("title") == "") {
				anchor.title = anchor.innerText;
			}

			if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") {
				anchor.target = "_blank";
			}
			else {
				anchor.target = "_top";
			}
		}
	}

	// Repair navbar:
	var start = document.URL.indexOf("/", 7);
	var end = document.URL.indexOf("/", start + 1);

	if (end != -1) {
		var selected = $("#prinavbar ul li a[href='" + document.URL.substring(start, end + 1) + "']");

		if (selected.length != 0) {
			$(selected).parent().addClass("on");
		}
		else {
			var title = document.title.substring(0, document.title.lastIndexOf(" - ", document.title.length));

			if (title.lastIndexOf(" - ", title.length) >= 0) {
				title = title.substring(title.lastIndexOf(" - ", title.length) + 3);
			}

			$("#prinavbar ul").append("<li class=\"ext\">" + title + "</li>");
		}
	}
	else {
		$("#prinavbar ul li:first-child").addClass("on");
	}
});

function changeImage(obj) {
	var preview = document.getElementById("preview");
	var destImage = preview.getElementsByTagName("img")[0];
	var srcImage = obj.getElementsByTagName("img")[0];

	preview.href = obj.href;
	destImage.src = srcImage.src.replace("w=36", "w=180").replace("s=true&", "");
	destImage.alt = srcImage.alt;

	return false;
}

/**
 * Sets a Cookie with the given name and value.
 *
 * name       Name of the cookie
 * value      Value of the cookie
 * [expires]  Expiration date of the cookie (default: end of current session)
 * [path]     Path where the cookie is valid (default: path of calling document)
 * [domain]   Domain where the cookie is valid
 *              (default: domain of calling document)
 * [secure]   Boolean value indicating if the cookie transmission requires a
 *              secure transmission
 */
function setCookie(name, value, expires, path, domain, secure)
{
    document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

/**
 * Gets the value of the specified cookie.
 *
 * name  Name of the desired cookie.
 *
 * Returns a string containing value of specified cookie,
 *   or null if cookie does not exist.
 */
function getCookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

/**
 * Deletes the specified cookie.
 *
 * name      name of the cookie
 * [path]    path of the cookie (must be same as path used to create cookie)
 * [domain]  domain of the cookie (must be same as domain used to create cookie)
 */
function deleteCookie(name, path, domain)
{
    if (getCookie(name))
    {
        document.cookie = name + "=" + 
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

function getXMLHttpRequestObject() {
	var xmlHttpRequest;
	
	if(window.XMLHttpRequest) {
		xmlHttpRequest = new XMLHttpRequest();
		
		if (xmlHttpRequest.overrideMimeType) {
			xmlHttpRequest.overrideMimeType("text/xml");
		}
	}
	else if (window.ActiveXObject) {
		try {
			xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	
	if (!xmlHttpRequest) {
		window.alert("can't create XMLHttpRequest object.");
		return null;
	}
	
	return xmlHttpRequest;
}