/* ----------------------------------------------------------------------------------------
Graceful E-Mail Obfuscation - JavaScript function (decodes e-mail addresses)
Last updated: July 31th, 2007 by Roel Van Gils
Modified: January 30, 2009 and September 18, 2009 by Sean Valencourt
---------------------------------------------------------------------------------------- */

window.addEvent('domready', geo);

function geo() {
	if (rot13) // Initiate ROT13 only if needed
		var ala_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 ala_links = $$('a'); // Get all anchors
	function geo_decode(ala_anchor) { // function to recompose the orginal address
		var ala_href = ala_anchor.getAttribute('href');
		var ala_address = ala_href.replace(/.*contact\/([a-z0-9._%-]+)\+([a-z0-9._%-]+)\+([a-z.]+)/i, '$1' + '@' + '$2' + '.' + '$3');
		var ala_linktext = ala_anchor.innerHTML; // IE Fix
		if (ala_href != ala_address) {
			ala_anchor.setAttribute('href','mailto:' + (rot13 ? str_rot13(ala_address,ala_map) : ala_address)); // Add mailto link	
			ala_anchor.innerHTML = ala_linktext; // IE Fix
		}
	}
	ala_links.each(
		function(element) { // Loop through the anchors
			element.addEvent('click', function() {
				geo_decode(this);
			});
			element.addEvent('mouseover', 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 = 1;

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

function str_rot13(a,l_ala_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' ? l_ala_map[b] : b);
	}
	return s;
}