php实现鼠标的光帽效果

$(
function(){
//页面dom加载完成之后执行的方法
//让表格隔行变颜色
$("#articleList").find("tr:even").css(
{
"background": "#eeeeee"
}
);

//鼠标放上，隔行变颜色
var bgColor;
$("tr").mouseover(
        function(){
                        bgColor = this.style.backgroundColor;  // 取背景颜色
                        $(this).css({
                                            "background":"#ff9900"
                                        });
                      }
 );
$("tr").mouseout(
                            function(){
                                                $(this).css({
                                                                       "background":bgColor
                                                        });
                                            }
                        ); 
//去掉光帽的效果
$("#pageURLTr").unbind("mouserover");
$("#pagesURLTr").unbind("mouseout");