<script language="javascript">
var _last = null;
function color_change(idx){
if ( _last )
d0cument.getElementById("test_"+_last).style.background = "";
d0cument.getElementById("test_"+idx).style.background = "#e0f6fe";
_last = idx;
}
</script>
<table border="0" cellspacing="0" cellpadding="0">
<tr id="test_1">
<td><a href="javascript:color_change('1');">111</td>
</tr>
<tr id="test_2">
<td><a href="javascript:color_change('2');">222</td>
</tr>
<tr id="test_3">
<td><a href="javascript:color_change('3');">333</td>
</tr>
<tr id="test_4">
<td><a href="javascript:color_change('4');">444</td>
</tr>
</table>
