层的移动,使用了jquery
直接上代码.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Sales Information System</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">