z-index在ff下的使用,火狐下总是被遮盖住一部分
附代码:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>输入框提示</title>
<script>  
function ddd(obj, sType) {  
var oDiv = document.getElementById(obj);  
if (sType == 'show') { oDiv.style.display = 'block';}  
if (sType == 'hide') { oDiv.style.display = 'none';}  
}  
</script>
<style>
#fbox_right{  float:right;width:753px;overflow:hidden;}
#fbox_right .fbox_right_all{ width:100%; overflow:hidden;}
.f_t_fabu{ width:100%; margin:0px;font-size:13px; overflow:hidden;}
.regform_info_rz{ margin:0 auto; width:730px;margin-top:5px;overflow:hidden;}
.regform_info_rz .reg_every {width:100%;clear:both;display:block;line-height:32px; vertical-align:middle;margin:0px;overflow:hidden; padding:10px; color:#000;}
.regform_info_rz .reg_every table{ margin:0 auto;}
.regform_info_rz .reg_every table th, .regform_info_rz .reg_every table td {font-size:13px; color:#666; font-weight:normal; }
.regform_info_rz .reg_every table th {text-align:right;}
input {
	margin:0px;
	padding:0px;
}
.f_sear_shop {
	position:relative;
	width:200px;
}
.f_sear_shop_input {
	border-style: solid;
	border-color: rgb(102, 102, 102) rgb(153, 153, 153) rgb(153, 153, 153) rgb(102, 102, 102);
	border-width: 1px;
	width: 200px;
	height: 18px;
	padding-top: 3px;
	padding-left: 2px;
}
#sd_shop {
	border:1px solid #cacaca;
	border-top:none;
	width:101%;
	position:absolute;
	left:0px;
	top:24px;
}
#sd_shop table {
	background:#ffffff none repeat scroll 0 0;
	cursor:default;
	width:100%;
}
#sd_shop td {
	height:18px;
	padding-left:5px;
}
#sd_shop .ml {
	background-color:#FFFFFF;
	color:#000000;
	font-size:14px;
}
#sd_shop .mo {
	background:url(j2.gif) no-repeat;
	color:#FFFFFF;
	font-size:14px;
}
#sd_shop .orange_f {
	color:#FF7101;
	font-size:13px;
	text-decoration:underline;
	cursor:pointer;
}
</style>
</head>
<body>
<div id="fbox_right">
   <div class="fbox_right_all">
     <div class="f_t_fabu">
       <div class="regform_info_rz" style="border-bottom: 1px solid rgb(255, 231, 211); padding-bottom: 10px;">
         <div class="reg_every">
           <table class="black_info" align="center">
             <tbody>
               <tr>
                 <td align="left">商城名称:</td>
                 <td align="left">
                  <div class="f_sear_shop">
                     <input type="text" class="f_sear_shop_input" value="" name="sname" onmouseover="ddd('sd_shop', 'show');" onmouseout="ddd('sd_shop', 'hide');"/>
                     <div id="sd_shop" style="display:none;" onmouseover="ddd('sd_shop', 'show');" onmouseout="ddd('sd_shop', 'hide');">
                       <table id="st" cellspacing="0" cellpadding="2">
                         <tbody>
                           <tr class="ml">
                             <td>深化一家</td>
                           </tr>
                           <tr class="ml">