如何使一个层位于ListBox控件的上面,用z-index却没有效.100分求答案 层在浏览器的优先级比较低,下面是显示的优先级div<select<iframe,除非你把listbox也做在层上,否则我认为是没有办法解决的 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <select><option>sf</option><option>sdf</option></select><script>var toshow='<iframe style="width:100%" height=36 src="about:<body topmargin=5 scroll=no><center>我经常访问的网站</center>"></iframe>';function ex(n){Expository1.innerHTML=n;Expository1.style.top=0Expository1.style.left=0Expository1.style.visibility="visible"}function ex1(){Expository1.style.visibility="hidden"}</script><div id=Expository1 style="position:absolute;z-index:2;width:250;border-style:double;border-color:#FF66FF;background-color:#FFCCFF; visibility:hidden" align=left></div><p><p><a href="http://www.csdn.net" onmouseover=ex(toshow) onmouseout=ex1()>显示说明</a> IE6还可以<select><option>sf</option><option>sdf</option></select><script>var pop=createPopup()pop.document.body.innerHTML="test";pop.show(window.screenLeft,window.screenTop+20,100,20);</script> 如果要正好覆盖select,可以用<select id=t><option>sf</option><option>sdf</option></select><script>var pop=createPopup()pop.document.body.innerHTML="test";pop.show(window.screenLeft+t.offsetLeft,window.screenTop+t.offsetTop,t.offsetWidth,t.offsetHeight);</script> <HTML><HEAD><TITLE>如何盖住(下拉列表框) Select ?</TITLE><META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select"> <OPTION value="fdsa" selected>fdsa</OPTION></SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT></BODY></HTML><HTML><HEAD><TITLE>如何盖住(下拉列表框) Select ?</TITLE><META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select"> <OPTION value="fdsa" selected>fdsa</OPTION></SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT></BODY></HTML><HTML><HEAD><TITLE>如何盖住(下拉列表框) Select ?</TITLE><META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select"> <OPTION value="fdsa" selected>fdsa</OPTION></SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT></BODY></HTML> 怎么让确定按钮弹出的确认对话框在验证后弹出 【【!(/^\d{6,}$/.test(nmb)这个正则式是何意 ???】】 js类的问题 急求正则表达式 注册时的出生日期 为什么全是-1(急,立即结贴) 如何使用javascript对file表单对象赋值 紧急求助!网页日历点击日期后页面跳转的问题!! 用Math.random()*8获得的数怎么赋给switch()? 自动生成页面,还是手工生成页面? 一个简单得问题,如何让文本框在打开页面是不可见? 下拉列表框有enable属性吗?
<option>sf</option>
<option>sdf</option>
</select>
<script>
var toshow='<iframe style="width:100%" height=36 src="about:<body topmargin=5 scroll=no><center>我经常访问的网站</center>"></iframe>';
function ex(n){Expository1.innerHTML=n;Expository1.style.top=0
Expository1.style.left=0
Expository1.style.visibility="visible"}
function ex1(){Expository1.style.visibility="hidden"}
</script>
<div id=Expository1 style="position:absolute;z-index:2;width:250;border-style:double;border-color:#FF66FF;background-color:#FFCCFF; visibility:hidden" align=left></div>
<p><p>
<a href="http://www.csdn.net" onmouseover=ex(toshow) onmouseout=ex1()>显示说明</a>
<select>
<option>sf</option>
<option>sdf</option>
</select>
<script>
var pop=createPopup()
pop.document.body.innerHTML="test";
pop.show(window.screenLeft,window.screenTop+20,100,20);
</script>
<select id=t>
<option>sf</option>
<option>sdf</option>
</select>
<script>
var pop=createPopup()
pop.document.body.innerHTML="test";
pop.show(window.screenLeft+t.offsetLeft,window.screenTop+t.offsetTop,t.offsetWidth,t.offsetHeight);
</script>
<META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select">
<OPTION value="fdsa" selected>fdsa</OPTION>
</SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT>
</BODY>
</HTML><HTML><HEAD><TITLE>如何盖住(下拉列表框) Select ?</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select">
<OPTION value="fdsa" selected>fdsa</OPTION>
</SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT>
</BODY>
</HTML><HTML><HEAD><TITLE>如何盖住(下拉列表框) Select ?</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD><BODY text="#000000" bgcolor="#ffffff" ms_positioning="GridLayout"><INPUT type="text" name="textfield"><br><SELECT name="select">
<OPTION value="fdsa" selected>fdsa</OPTION>
</SELECT><br><iframe></iframe><OBJECT style="Z-INDEX: 1000; LEFT: 47px; WIDTH: 152px; POSITION: absolute; TOP: 5px; HEIGHT: 200px" type="text/x-scriptlet" data="about:这是盖住下拉框的东东"></OBJECT>
</BODY>
</HTML>