JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://malsup.github.com/jquery.blockUI.js"></script>
<div style="float: left;">
        <a id="about" class="windowClass" href="#">About</a>&nbsp;&middot;
        <a id="terms" class="windowClass" href="#">Terms</a>&nbsp;&middot;
        <a id="privacy" class="windowClass" href="#">Privacy</a>&nbsp;&middot;
        <a id="language" class="windowClass" href="#">Language: English</a>
</div>
<div id="register_win" class="modal">
    <span class="modal_header">Register</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="register_close">
    </div>
</div>
<div id="about_win" class="modal">
    <span class="modal_header">About</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="about_close">
    </div>
</div>
<div id="terms_win" class="modal">
    <span class="modal_header">Terms</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="terms_close">
    </div>
</div>
<div id="privacy_win" class="modal">
    <span class="modal_header">Privacy</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="privacy_close">
    </div>
</div>
<div id="forgotpwd_win" class="modal">
    <span class="modal_header">Forgotten your password?</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="forgotpwd_close">
    </div>
</div>
<div id="language_win" class="modal">
    <span class="modal_header">Language</span>
    <div class="modal_close">
        <img src="http://www.ezpz.co.za/assets/close-button-25f4a789916c34b8c927d7d0ec98410b.gif" id="language_close">
    </div>
</div>

CSS

.modal {
    display: none;
    padding: 10px;
    cursor: default;
}
.modal_header {
    font-family: Verdana, Geneva, sans-serif;
    float: left;
}
.modal_close {
    cursor: pointer;
    float: right;
}

JavaScript

$(document).ready(function () {

    $('.windowClass').click(function () { // <-- bind to all window elements with that class
        $.blockUI({
            message: $('#' + this.id + '_win'),
            css: {
                height: "60%",
                bottom: "20%",
                top: "20%",
                left: "10%",
                right: "10%",
                width: '80%'
            }
        });
    });

    $('[id$=_close]').click(function () { //<-- gets all elements with id's that end with close
        $.unblockUI();
        return false;
    });

});