/* 
*  Copyright 2006-2007 Dynamic Site Solutions.
*  Free use of this script is permitted for non-commercial applications,
*  subject to the requirement that this comment block be kept and not be
*  altered.  The data and executable parts of the script may be changed
*  as needed.  Dynamic Site Solutions makes no warranty regarding fitness
*  of use or correct function of the script.  Terms for use of this script
*  in commercial applications may be negotiated; for this, or for other
*  questions, contact "license-info@dynamicsitesolutions.com".
*
*  Script by: Dynamic Site Solutions -- http://www.dynamicsitesolutions.com/
*  Last Updated: 2007-06-17
*/

//IE5+/Win, Firefox, Netscape 6+, Opera 7+, Safari, Konqueror 3, IE5/Mac, iCab 3

var addBookmarkObj = {
    linkText: 'Bookmark this page for later',
    addTextLink: function(parId) {
        var a = addBookmarkObj.makeLink(parId);
        if (!a) return;
        a.appendChild(document.createTextNode(addBookmarkObj.linkText));
    },
    addImageLink: function(parId, imgPath) {
        if (!imgPath || isEmpty(imgPath)) return;
        var a = addBookmarkObj.makeLink(parId);
        if (!a) return;
        var img = document.createElement('img');
        img.title = img.alt = addBookmarkObj.linkText;
        img.src = imgPath;
        a.appendChild(img);
    },
    makeLink: function(parId) {
        if (!document.getElementById || !document.createTextNode) return null;
        parId = ((typeof (parId) == 'string') && !isEmpty(parId))
      ? parId : 'addBookmarkContainer';
        var cont = document.getElementById(parId);
        if (!cont) return null;
        var a = document.createElement('a');
        a.href = location.href;
        if (window.opera) {
            a.rel = 'sidebar'; // this makes it work in Opera 7+
        } else {
            // this doesn't work in Opera 7+ if the link has an onclick handler,
            // so we only add it if the browser isn't Opera.
            a.onclick = function() {
                addBookmarkObj.exec(this.href, this.title);
                return false;
            }
        }
        a.title = document.title;
        return cont.appendChild(a);
    },
    exec: function(url, title) {
        // user agent sniffing is bad in general, but this is one of the times 
        // when it's really necessary
        var ua = navigator.userAgent.toLowerCase();
        var isKonq = (ua.indexOf('konqueror') != -1);
        var isSafari = (ua.indexOf('webkit') != -1);
        var isMac = (ua.indexOf('mac') != -1);
        var buttonStr = isMac ? 'Command/Cmd' : 'CTRL';

        if (window.external && (!document.createTextNode ||
      (typeof (window.external.AddFavorite) == 'unknown'))) {
            // IE4/Win generates an error when you
            // execute "typeof(window.external.AddFavorite)"
            // In IE7 the page must be from a web server, not directly from a local 
            // file system, otherwise, you will get a permission denied error.
            window.external.AddFavorite(url, title); // IE/Win
        } else if (isKonq) {
            alert('You need to press CTRL + B to bookmark our site.');
        } else if (window.opera) {
            void (0); // do nothing here (Opera 7+)
        } else if (window.home || isSafari) { // Firefox, Netscape, Safari, iCab
            alert('You need to press ' + buttonStr + ' + D to bookmark our site.');
        } else if (!window.print || isMac) { // IE5/Mac and Safari 1.0
            alert('You need to press Command/Cmd + D to bookmark our site.');
        } else {
            alert('In order to bookmark this site you need to do so manually ' +
        'through your browser.');
        }
    }
}

function isEmpty(s) { return ((s == '') || /^\s*$/.test(s)); }

function dss_addEvent(el, etype, fn) {
    if (el.addEventListener && (!window.opera || opera.version) &&
  (etype != 'load')) {
        el.addEventListener(etype, fn, false);
    } else if (el.attachEvent) {
        el.attachEvent('on' + etype, fn);
    } else {
        if (typeof (fn) != "function") return;
        if (typeof (window.earlyNS4) == 'undefined') {
            // to prevent this function from crashing Netscape versions before 4.02
            window.earlyNS4 = ((navigator.appName.toLowerCase() == 'netscape') && (parseFloat(navigator.appVersion) < 4.02) && document.layers);
        }
        if ((typeof (el['on' + etype]) == "function") && !window.earlyNS4) {
            var tempFunc = el['on' + etype];
            el['on' + etype] = function(e) {
                var a = tempFunc(e), b = fn(e);
                a = (typeof (a) == 'undefined') ? true : a;
                b = (typeof (b) == 'undefined') ? true : b;
                return (a && b);
            }
        } else {
            el['on' + etype] = fn;
        }
    }
}

dss_addEvent(window, 'load', addBookmarkObj.addTextLink);