请问如何设置某个具有特定id的<tr>元素的背景色？在线等！

Question

eval("document.all.row"+ rowID).bgColor = "blue";

Answer 1

<script language="javascript">
function select_row(rowID)
{
document.getElementById("row"+rowID).bgColor="blue";
}
</script>

Answer 2

<form name="Form1"><table width=100%>
<tr id="row0" onclick="select_row(this)"><td>...</td></tr>
<tr id="row0" onclick="select_row(this)"><td>...</td></tr>
<tr id="row0" onclick="select_row(this)"><td>...</td></tr></table></form>
<script language="javascript">
var theCurrentTr;
function select_row(obj)
{
if(theCurrentTr!=null) theCurrentTr.bgColor="";
theCurrentTr=obj;
theCurrentTr.bgColor="cccccc";}
</script>

Answer 3

<form name="Form1"><table width=100% bgcolor=cccccc onmouseout="select_row(null)">
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
</table></form>
<script language="javascript">
var theCurrentTr;
function select_row(obj)
{
if(theCurrentTr!=null) theCurrentTr.bgColor="";
theCurrentTr=obj;
if(theCurrentTr!=null) theCurrentTr.bgColor="blue";}
</script>

Answer 4

<form name="Form1"><table width=100% bgcolor=cccccc onmouseout="select_row(null)">
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
<tr id="row0" onmouseover="select_row(this)"><td>...</td></tr>
</table></form>
<script language="javascript">
var theCurrentTr;
function select_row(obj)
{
if(theCurrentTr!=null) theCurrentTr.bgColor="";
theCurrentTr=obj;
if(theCurrentTr!=null) theCurrentTr.bgColor="blue";}
</script>

Answer 5

<form id="Form1"><table width=100%>
<tr id="row0" onclick="select_row('0')"><td>...</td></tr>
<tr id="row0" onclick="select_row('1')"><td>...</td></tr>
<tr id="row0" onclick="select_row('2')"><td>...</td></tr></table></form>
<script language="javascript">
function select_row(obj)
{
Form1.childNodes[obj].bgcolor="blue";}
</script>