firefox兼容<body>
<table onclick="SetColor(event)" id="_t">
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
</table>
<script tyle="text/javascript">
function SetColor(e)
{
if (!e) e = window.event;
var obj
if(window.event)
obj = e.srcElement
else
obj = e.target
if(obj.tagName != "TD") returnvar oldTD = obj
while( obj.tagName != "TR")
obj = obj.parentNode
var i
for(i = 0;i<obj.cells.length;i++)
{
if(obj.cells[i] == oldTD) break
}
var table = document.getElementById("_t")
for(j = 0;j<table.rows.length;j++)
{ table.rows[j].cells[i].bgColor = table.rows[j].cells[i].bgColor=="#ff0000"?"#ffffff":"#ff0000"
}
}
</script>
</body>
<table onclick="SetColor(event)" id="_t">
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
<tr>
<td>dd</td><td>dd</td><td>dd</td><td>dd</td>
</tr>
</table>
<script tyle="text/javascript">
function SetColor(e)
{
if (!e) e = window.event;
var obj
if(window.event)
obj = e.srcElement
else
obj = e.target
if(obj.tagName != "TD") returnvar oldTD = obj
while( obj.tagName != "TR")
obj = obj.parentNode
var i
for(i = 0;i<obj.cells.length;i++)
{
if(obj.cells[i] == oldTD) break
}
var table = document.getElementById("_t")
for(j = 0;j<table.rows.length;j++)
{ table.rows[j].cells[i].bgColor = table.rows[j].cells[i].bgColor=="#ff0000"?"#ffffff":"#ff0000"
}
}
</script>
</body>
<table onclick="SetColor(event)" id="_t">
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
</table>
<script tyle="text/javascript">
var oldClr = new Array()
function SetColor(e)
{
if (!e) e = window.event;
var obj
if(window.event)
obj = e.srcElement
else
obj = e.target
if(obj.tagName != "TD") returnvar oldTD = obj
while( obj.tagName != "TR")
obj = obj.parentNode
var i
for(i = 0;i<obj.cells.length;i++)
{
if(obj.cells[i] == oldTD) break
}
var table = document.getElementById("_t")
for(j = 0;j<table.rows.length;j++)
{
table.rows[j].cells[i].bgColor = table.rows[j].cells[i].bgColor==oldClr[i]?"#ff0000":oldClr[i]
}
}window.onload = function()
{
var table = document.getElementById("_t")
for(j = 0;j<table.rows[0].cells.length;j++)
{
oldClr[j] = table.rows[0].cells[j].bgColor
}
}</script>
</body>
<table onclick="SetColor(event)" id="_t">
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
<tr>
<td>dd</td><td bgcolor="#0099ff">dd</td><td>dd</td><td bgcolor="#dedede">dd</td>
</tr>
</table>
<script tyle="text/javascript">
var oldClr = new Array()
function SetColor(e)
{
if (!e) e = window.event;
var obj
if(window.event)
obj = e.srcElement
else
obj = e.target
if(obj.tagName != "TD") returnvar oldTD = obj
while( obj.tagName != "TR")
obj = obj.parentNode
var i
for(i = 0;i<obj.cells.length;i++)
{
if(obj.cells[i] == oldTD) break
}
var table = document.getElementById("_t")
for(j = 0;j<table.rows.length;j++)
{
//如果要删除其它列的颜色,请加上下面的3行
for(m = 0;m < table.rows[j].cells.length;m++)
{
table.rows[j].cells[m].bgColor = oldClr[m]
}
table.rows[j].cells[i].bgColor = table.rows[j].cells[i].bgColor==oldClr[i]?"#ff0000":oldClr[i]
}
}window.onload = function()
{
var table = document.getElementById("_t")
for(j = 0;j<table.rows[0].cells.length;j++)
{
oldClr[j] = table.rows[0].cells[j].bgColor
}
}</script>
</body>
若此对象的底色为红色,变原来的颜色
若此对象的底色不为红色,变为红色问个问题,如果获得焦点的话,需要和单击一样吗?比如用tab键跳转。。