Jquery切换不同图片示例代码

#sidebardiv#live_chata{
background:url("scroll/live_chat1.jpg");
height:76px;
}
#sidebardiv#live_chata:hover{
background:url("scroll/live_chat2.jpg");
}
#sidebardiv#customer_surveya{
background:url("scroll/survey1.jpg");
height:75px;
}
#sidebardiv#customer_surveya:hover{
background:url("scroll/survey2.jpg");
}
#sidebardiv#newsletter_signa{
background:url("scroll/newsletter_sign_bg.jpg");
height:76px;
}
#sidebardiv#newsletter_signa:hover{
background:url("scroll/newsletter_sign_bg1.jpg");
height:76px;
}
#sidebardiv#back_topa{
background:url("scroll/back_top1.jpg");
height:40px;
}
#sidebardiv#back_topa:hover{
background:url("scroll/back_top2.jpg");
}
#sidebardiva{
cursor:pointer;
display:block;
width:77px;
}