preventSpam.js

function escapeAll(str) {
    var hexString = "";
    for (var index=0; index<str.length; index++) {
        var charCode = str.charCodeAt(index);
        var h = charCode.toString(16).toUpperCase();
        if (h.length == 1) {
            h = "0" + h;
        }
        h = "%" + h;
        hexString += h;
    }
    return hexString;
}

jQuery(function() {
    jQuery('a[href^="mailto:"]').each(function() {
    	var url = this.href.split("mailto:");
        var email = url[1].split('@');
        urlToEscape = email[0] + '@';
        this.href = "mailto:" + escapeAll(urlToEscape) + email[1];
    });
});