/* ----------------------------------------------------------------------------------------
Graceful E-Mail Obfuscation - JavaScript function (decodes e-mail addresses)
Last updated: July 31th, 2007 by Roel Van Gils
---------------------------------------------------------------------------------------- */

window.onload = function () {
    geo();
}

function geo() {
    if (!document.getElementsByTagName) // Check for browser support
            return false;
    var map = rot13init(); 
    var tooltip_js_on = 'Send E-Mail';
    var tooltip_js_off = 'To reveal this e-mail address, you\'ll need to answer a simple question';
    var links = document.getElementsByTagName('a'); // Get all anchors
    function geo_decode(anchor) { // function to recompose the orginal address
        var href = anchor.getAttribute('href');
        var address = href.replace(/.*eobsf\/([a-z0-9._%-]+)\+([a-z0-9._%-]+)\+([a-z.]+)/i, '$1' + '@' + '$2' + '.' + '$3');
        var linktext = anchor.innerHTML; // IE Fix
        if (href != address) {
            anchor.setAttribute('href','mailto:' + (rot13 ? str_rot13(address,map) : address)); // Add mailto link  
            anchor.innerHTML = linktext; // IE Fix
        }
    }
    for (var l = 0 ; l < links.length ; l++) { // Loop through the anchors
        links[l].onclick = function() { // Encode links when clicked
            geo_decode(this);
        }
        links[l].onmouseover = function() { // Display tooltip when links are hovered
            if (this.getAttribute('title') == tooltip_js_off) { // Set custom tooltip if specified
                this.setAttribute('title',tooltip_js_on);
                geo_decode(this); // Encode links when hovered (so that the address appears correctly in the browser's status bar)
            }
        }
    }
}

var rot13 = true;

function rot13init() {
    var map = new Array();
    var s = "abcdefghijklmnopqrstuvwxyz";
    for (var i = 0 ; i < s.length ; i++)
        map[s.charAt(i)] = s.charAt((i+13)%26);
    for (var i = 0 ; i < s.length ; i++)
        map[s.charAt(i).toUpperCase()] = s.charAt((i+13)%26).toUpperCase();
    return map;
}

function str_rot13(a,map) {
    var s = "";
    for (var i = 0 ; i < a.length ; i++) {
        var b = a.charAt(i);
        s += (b>='A' && b<='Z' || b>='a' && b<='z' ? map[b] : b);
    }
    return s;
}