blech()

blech.js

//-- blech
var is_blech = false;
var blech_init = function () {
    var css_str = "@keyframes strobe { 50% {background: purple;color: #00ee00;} }  .strobe {animation-play-state: running;animation-duration: 100ms;}  .strobe > a {animation-play-state: running;animation: strobe 100ms steps(1, end) infinite;}";
    var css_node = document.createElement('style');
    css_node.appendChild(document.createTextNode(css_str));
    document.head.appendChild(css_node);
    is_blech = true;
}

var blech = function () {
    var $ = jQuery;

    !is_blech ? blech_init();

    $('a').each(function (i, el) {
        $(el).parent().addClass('strobe');
    });
};