Jquery 切换不同图片示例代码_javascript技巧

#sidebar div#live_chat a {
background: url("scroll/live_chat1.jpg") ;
height: 76px;
}
#sidebar div#live_chat a:hover {
background: url("scroll/live_chat2.jpg") ;
}
#sidebar div#customer_survey a {
background: url("scroll/survey1.jpg") ;
height: 75px;
}
#sidebar div#customer_survey a:hover {
background: url("scroll/survey2.jpg");
}
#sidebar div#newsletter_sign a {
background: url("scroll/newsletter_sign_bg.jpg") ;
height: 76px;
}
#sidebar div#newsletter_sign a:hover {
background: url("scroll/newsletter_sign_bg1.jpg") ;
height: 76px;
}
#sidebar div#back_top a {
background: url("scroll/back_top1.jpg");
height: 40px;
}
#sidebar div#back_top a:hover {
background: url("scroll/back_top2.jpg") ;
}
#sidebar div a {
cursor: pointer;
display: block;
width: 77px;
}