function processExternalLinks()
{
	if (!document.getElementsByTagName)
		return;

	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";
	} 
}
window.onload = processExternalLinks;

/**
 * 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;
}

function journalSearch() {
	location.href = "journal.aspx?q=" + encodeURI(document.getElementById("q").value).replace(/\+/g, "%2B").replace(/(%20)+/, "+");
}

function showOptions() {
	setTimeout("document.getElementById(\"options\").style.display = \"block\"", 30);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 10)\"", 30);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 20)\"", 60);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 30)\"", 90);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 40)\"", 120);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 50)\"", 150);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 60)\"", 180);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 70)\"", 210);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 80)\"", 240);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 90)\"", 270);
	setTimeout("document.getElementById(\"options\").style.filter = \"\"", 300);
	
	if(document.getElementById("mode") != null) {
		document.getElementById("modelist").value = document.getElementById("mode").value;
	}

	if(document.getElementById("location") != null) {
		document.getElementById("locationlist").value = document.getElementById("location").value;
	}

	if(document.getElementById("language") != null) {
		document.getElementById("languagelist").value = document.getElementById("language").value;
	}
}

function hideOptions() {
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 90)\"", 50);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 80)\"", 100);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 70)\"", 150);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 60)\"", 200);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 50)\"", 250);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 40)\"", 300);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 30)\"", 350);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 20)\"", 400);
	setTimeout("document.getElementById(\"options\").style.filter = \"alpha(opacity = 10)\"", 450);
	setTimeout("document.getElementById(\"options\").style.display = \"none\"", 500);
}

function applyOptions() {
	var searchform = document.getElementById("searchform");

	if(document.getElementById("mode") != null) {
		searchform.removeChild(document.getElementById("mode"));
	}

	if(document.getElementById("location") != null) {
		searchform.removeChild(document.getElementById("location"));
	}

	if(document.getElementById("language") != null) {
		searchform.removeChild(document.getElementById("language"));
	}

	if(modelist.value != "contained") {
		var element = document.createElement("INPUT");
		element.type = "hidden";
		element.name = "mode";
		element.id = "mode"
		element.value = document.getElementById("modelist").value;
		
		searchform.appendChild(element);
	}

	if(locationlist.value != "nodefine") {
		var element = document.createElement("INPUT");
		element.type = "hidden";
		element.name = "location";
		element.id = "location";
		element.value = document.getElementById("locationlist").value;
		
		searchform.appendChild(element);
	}

	if(languagelist.value != "nodefine") {
		var element = document.createElement("INPUT");
		element.type = "hidden";
		element.name = "language";
		element.id = "language";
		element.value = document.getElementById("languagelist").value;
		
		searchform.appendChild(element);
	}
}