<scripttype="text/javascript">


$("a").click(function(){clearClass();$(this).addClass("bg_color");});functionclearClass(){$("a").each(function(){$(this).removeClass("bg_color");});}

</script>




<styletype="text/css">.bg_color{cursor:pointer;//鼠标显示效果，小手

color:Red;

font-weight:bold;//加粗

}</style>