linieskift i php

Jeg har lavet noget php-kode, men kan ikke finde ud af at lave et simpelt linieskift. Kan du hjælpe mig? Jeg vil gerne have et linieskift efter linien:
$kode .= "<tr><td colspan=\"3\">" . htmlentities($row["question"]) . "</td></tr>\n";


function ShowResults() {
########## POLL QUESTION ##########
$kode .= "<table>\n";
$conn = mysql_connect ("xxxxxxxx","xxxxxxxx","xxxxxxxx");
mysql_select_db("boldsens_dk");
$result = mysql_query("select * from pollquestion WHERE start <= now() AND end >= now()");
while ($row = mysql_fetch_array($result)) {
$kode .= "<tr><td colspan=\"3\">" . htmlentities($row["question"]) . "</td></tr>\n";
$questionid = $row["questionid"];
}

########## SUM OF POLLANSWERS ##########

$result = mysql_query("select sum(hits) as hits from pollanswer where questionid = '$questionid'");
while ($row = mysql_fetch_array($result)) {
  $sum = $row["hits"];
}

$result = mysql_query("select * from pollanswer WHERE questionid = '$questionid'");
while ($row = mysql_fetch_array($result)) {
  $percent = 0;
  if($row["hits"] > 0) {
    $percent = ($row["hits"] * 100) / $sum;
  }
    $kode .= "<tr><td>" . htmlentities($row["answer"]) . "</td>";
    $kode .= '<td><img src="Pics/bar.jpg" style="width: ' . $percent . 'px; height: 12px; border: 0px;" alt=""></td>';
    $kode .= "<td>" . round($percent , 1). "%</td></tr>\n";
}
  $kode .= "<br /><td><tr><td colspan=\"2\">$sum stemmer i alt</td></tr>\n";
mysql_close($conn);

$kode .= "</table>\n";

########## VOTE ##########

if($_REQUEST[action] == "vote") {
$conn = mysql_connect ("xxxxxxxx","xxxxxxxx","xxxxxxxx");
  mysql_select_db("boldsens_dk");
  mysql_query("UPDATE pollanswer SET hits = hits + 1 WHERE questionid = '$_REQUEST[questionid]' AND id = '$_REQUEST[id]'");
  mysql_close($conn);
}
return $kode;
}


if(HaveVoted() == true) {
echo ShowResults();
} else {
echo ShowPoll();
}