JSFiddle - React, Tailwind, and code Playground

HTML

<table id="atcOn" style="border-spacing: 20px 10px;">
    <tr>
        <td class='ATConline' onmouseover='displayData(0)' onmouseout='hideData(0)'>
            <ul>
                <li>LCCC_CTR</li>
                <li id='0'></li>
                <li>122.800 Mhz</li>
            </ul>
        </td>
        <td>LLBG_APP</td>
        <td>LLBG_DEL</td>
    </tr>
    <tr>
        <td>LLBG_E_GND</td>
        <td>LLBG_TWR</td>
        <td>LLBG_W_GND</td>
    </tr>
    <tr>
        <td>LLLL_CTR</td>
        <td>LLLL_FSS</td>
        <td>LLSD_TWR</td>
    </tr>
    <tr></tr>
</table>

JavaScript

var lastData = new Array('');
var data = new Array(
    "Ofir Banim (<a onmouseover='displayData(0)' onmouseout='hideData(0)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=390833'>390833</a>) <br/><img onmouseover='displayData(0)' onmouseout='hideData(0)' src='https://www.ivao.aero/data/images/ratings/atc/5.gif' />", " (<a onmouseover='displayData(1)' onmouseout='hideData(1)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(1)' onmouseout='hideData(1)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(2)' onmouseout='hideData(2)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(2)' onmouseout='hideData(2)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(3)' onmouseout='hideData(3)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(3)' onmouseout='hideData(3)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(4)' onmouseout='hideData(4)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(4)' onmouseout='hideData(4)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(5)' onmouseout='hideData(5)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(5)' onmouseout='hideData(5)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(6)' onmouseout='hideData(6)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img onmouseover='displayData(6)' onmouseout='hideData(6)' src='https://www.ivao.aero/data/images/ratings/atc/.gif' />", " (<a onmouseover='displayData(7)' onmouseout='hideData(7)' href='https://www.ivao.aero/Login.aspx?r=Member.aspx?Id=0'>0</a>) <br/><img...