csu3_am335x/EVSE/rootfs/var/www/scan_wifi.php

<?php
        echo '<h1>Scan Wifi SSID...</h1><br>';

        $ssids = explode(",", shell_exec('/usr/bin/run_scan_ssid.sh'));

        echo '<pre>Name';

        echo '<select id="ssids" name="ssids" onChange="getComboA(this)">';
        foreach($ssids as $ssid)
        {
		if(strlen($ssid) > 1)
                	echo '<option value="'.$ssid.'">'.$ssid.'</option>';
        }
        echo '</select></pre>';
        echo '<input type="button" value="Select" OnClick="sendValue()">'
?>

<script language="javascript">
var ssid_selected;

function sendValue()
{
  getComboA(document.getElementById("ssids"));
  window.opener.document.getElementById('WifiSsid').value=ssid_selected;
  window.close();
}

function getComboA(sel)
{
    ssid_selected = sel.value;
}

</script>