/**
    *  jquery.mailtoObsfucator
    *  Author: Karl Payne
    *  (c) 2009 Spiderscope (http://www.spiderscope.com/)
    **/

    jQuery.fn.mailtoObsfucator = function(options) {

      settings = jQuery.extend({
         varName: "mt"
      }, options);

      // loop through all the <a> tags
      return this.each( function () {

        // grab the href
        var href = $(this).attr("href");

        // check for a query string
        var qMarkPos = href.lastIndexOf('?');
        if(qMarkPos == -1) {
          // continue with the next iteration of the each loop
          return true;
        }

        // check for our special var followed by an equals sign
        var varPos = href.lastIndexOf(settings.varName + "=");
        if(varPos == -1) {
          // continue with the next iteration of the each loop
          return true;
        }

        // extract query string
        var queryString = href.substr(qMarkPos+1, href.length );

        // split query string into vars
        var qVars = queryString.split('&');

        var newLink = '';   // stores the new url
        var varCount = 0;   // flag so we only need to re-write correctly formatted urls

        // loop through all the vars
        for(var i in qVars ) {
          varCount++;
          // split the current var into a key | value pair
          var pair = qVars[i].split('=');
          // check this is the variable we are looking for
          if(pair[0] == settings.varName) {
            // replace the symbols
            var mailAdd = pair[1];
            var mailAdd = mailAdd.replace(/\+/g,'.'); // all occurences of +
            var mailAdd = mailAdd.replace(/#/,'@');   // first occurence of @
            // build the new link
            newLink = "mailto:" + mailAdd ;
          // this will only fire if the first var is the one we look for
          } else if(varCount > 1) {
            // if its the second variable, it is really the first - hehe
            if(varCount == 2) {
              newLink += "?";
            } else {
              newLink += "&";
            }
            // add any other variables back onto the url such as subject= and body=
            newLink += pair.join("=");
          // if the first var isnt the one we want
          } else {
            // continue with the next link
            return true;
          }
        }

        // if we did find a link - re-write it
        if(varCount >= 1) {
          // set the href to the new mailto
          $(this).attr("href", newLink);
        }

        // continue with the next link
        return true;

      });

    };