<style>
.tr_color{
background-color:#ffffff;
}
.tr_color_hover{
background-color:blanchedalmond;
}
</style>
<script type="text/javascript">
function mover(obj){
$(obj).children("td").each(function(){
$(this).removeClass("tr_color");
$(this).addClass("tr_color_hover");
}) }
function mback(obj){
$(obj).children("td").each(function(){
$(this).removeClass("tr_color_hover");
$(this).addClass("tr_color");
})}
</script>
<tr onmouseover="mover(this)" onmouseout="mback(this)">
<td height="18" class="tr_color">
</tr><script type="text/javascript">
function mover(obj){
$(obj).children("td").each(function(){
$(this).attr("bgColor","#eafcd5")
}) }
function mback(obj){
$(obj).children("td").each(function(){
$(this).attr("bgColor","#FFFFFF")
})}
</script>
<tr onmouseover="mover(this)" onmouseout="mback(this)">
<td height="18"bgColor="#FFFFFF">
</tr>
原文：http://www.cnblogs.com/yxwkf/p/5219962.html