<tbody><tr>
       <th>Album</th>
       <th>Beschreibung</th>
       <th>Fotos</th>
       <th>Upload</th>
       <th>sichtbar</th>
       <th width="16">löschen</th>
</tr>
<tr id="zeile1">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr id="zeile2">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr id="zeile3">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</tbody>

<tr id="zeile4">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>

document.getElementById('irgendeine_id').innerHTML = ''hier kommt die zeile rein?!";

<script type="text/javascript">
// <![CDATA[
/**
 * Appends a row to a table
 *
 * @param tableId String ID of the table to which the row will be added
 * @param cells   Array  Cells to add as a new row
 */
function addRow(tableId, cells)
{
    var tb    = document.getElementById(tableId)
                        .getElementsByTagName('tbody')[0];
    var newTr = document.createElement('tr');

    for (var i = 0; i < cells.length; i++) {
        var td = document.createElement('td');
        td.appendChild(document.createTextNode(cells[i]));
        newTr.appendChild(td);
    }

    tb.appendChild(newTr);
}
// ]]>
</script>

<button onclick="addRow('test', ['eins', 'zwei']);">add</button>
<button onclick="addRow('test', ['drei', 'vier']);">add2</button>

<table id="test" border="1">
    <tbody>
        <tr>
            <td>demo</td>
            <td>demo</td>
        </tr>
    </tbody>
</table> 

function addRow(tableId, cells)
{
    var tb    = document.getElementById(tableId)
                        .getElementsByTagName('tbody')[0];
    var newTr = document.createElement('tr');

    for (var i = 0; i < cells.length; i++) {
        var td = document.createElement('td');
        
        //nur Text
        //td.appendChild(document.createTextNode(cells[i]));
        
        //Text + Link
        td.innerHTML = "<a href='#' onclick=\"alert('"+cells[i]+"'); return false;\">"+cells[i]+"</a>";
        newTr.appendChild(td);
    }

    //tb.appendChild(newTr);
    //test11 ist durch eine variable zu ersetzen
    tb.appendChild(newTr).setAttribute("id", "test11", 0);
}