窗口大小调整时，右侧的CSS水平菜单项重叠

Question

我已经搜索，但一直无法找到解决方案。

我有一个CSS的水平菜单，导航菜单对齐左边，工具栏项对齐右边。浏览器窗口展开时看起来很好，但在调整大小时，右侧的工具栏与左侧的导航菜单项重叠。显然这是因为我已经把它定位了，但我不确定如何解决这个问题。是否有可能防止工具栏重叠，而是隐藏并产生水平滚动条？

请参阅我的jsfiddle http://jsfiddle.net/e9etC/2/

HTML：

<div id="navcontainer"> 
<div id="menu"> 
    <ul> 
     <li><a href="#">AAAAA</a></li> 
     <li><a href="#">BBBBB</a> 
      <ul> 
       <li><a href="#">xxxxx</a></li> 
       <li><a href="#">xxxx</a></li> 
       <li><a href="#">dddd</a></li> 
       <li><a class="menuparent" href="#">cccccc</a> 
        <ul> 
         <li><a href="#">1111</a></li> 
         <li><a href="#">2222</a></li> 
         <li><a href="#">333</a></li> 
        </ul> 
       </li> 
      </ul> 
     </li> 
     <li><a href="#">CCCCC</a> 
      <ul> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
       <li><a class="menuparent" href="#">SubMenu</a> 
        <ul> 
         <li><a href="#">SubSubMenu</a></li> 
         <li><a href="#">SubSubMenu</a></li> 
        </ul> 
       </li> 
       <li><a href="#">SubMenu</a></li> 
      </ul> 
     </li> 
     <li><a href="#">DDDDD</a> 
      <ul> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
      </ul> 
     </li> 
     <li><a href="#">EEEE</a> 
      <ul> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
       <li><a href="#">SubMenu</a></li> 
      </ul> 
     </li> 
     <li><a href="#">GGGGG</a></li> 
    </ul> 
</div> 
<div id="toolbar"> 
    <ul> 
     <li class="currentclient"><a title="Most recently selected client" href="#">1234567: John Doe</a></li> 
     <li>Client Search</li> 
     <li><input name="cpc" title="Search by client code, names, email address, phone numbers or CSN." id="cpc" style="width: 150px;" type="text"/></li> 
     <li><input name="btnCP" class="inputbutton" id="btnCP" type="button" value="Search"/></li> 
    </ul> 
</div> 

CSS：

html, body 
{ 
    padding: 0; 
    margin: 0; 
} 

body 
{ 
    font-size: 8pt; 
    font-family: Arial, Helvetica, sans-serif; 
    background-color: #eaeaea; 
} 

#navcontainer 
{ 
    position: fixed;   
    top: 14px; 
    left: 0; 
    width:100%; 
    height: 28px; 
    background-color: #F5F5F5; 
} 

#navcontainer, #menu ul ul, #menu ul ul ul 
{ 
    border-top: 1px solid #FFF; 
    border-left: 1px solid #FFF; 
    border-right: 1px solid #808080; 
    border-bottom: 1px solid #808080; 
} 

#menu, #toolbar{ 

    padding:0; 
    margin:0; 
    position: absolute; 
} 
#menu ul, #toolbar ul{ 
    padding:0; 
    margin:0; 
} 
#menu li, #toolbar li{ 
    position: relative; 
    list-style: none; 
    margin: 0; 
    padding:0; 
    white-space: nowrap; 
} 

#menu li a, #toolbar li a{ 
    height: 28px; 
    display: block; 
    text-decoration:none; 
    line-height: 28px; 
    color: #000; 
    padding: 0 10px; 
    white-space: nowrap; 
} 

#menu ul ul li a, #menu ul ul ul li a 
{ 
    line-height: 20px; 
    height: 20px; 
} 

#menu li a:hover{ 
    background-color: #A9A9A9; 
    color: #fff; 
} 
#menu ul ul, #menu ul ul ul { 
    position: absolute; 
    visibility: hidden; 
} 

#menu ul ul ul { 
    left: 100%; 
    top: 0; 
    margin-top: -1px; 
} 

#menu ul li:hover > ul, #menu ul ul li:hover ul{ 
    visibility:visible; 
} 
#menu > ul > li > a { 
    text-align:center; 
} 

#menu > ul, #toolbar > ul { 
    white-space: nowrap; 
} 
#menu > ul > li { 
    display: inline-block; 
    float: none; 
    border-left: 1px solid #808080; 
    margin: 0 -3px 0 0; 
} 
#menu ul li:first-child 
{ 
    border-left: none; 
} 

#menu a.menuparent 
{ 
    background-image: url(greyarrow.gif); 
    background-position: right center; 
    background-repeat: no-repeat; 
} 

#toolbar 
{ 
    right: 3px; 
} 

#toolbar > ul > li 
{ 
    display: inline-block; 
    float: none; 
} 
#toolbar .currentclient a { 
    color: #1B70E0; 
    text-decoration: underline; 
} 
.inputbutton 
{ 
    border: solid 1px #8a9ab2; 
    padding: 5px; 
    padding-top: 0; 
    cursor: pointer; 
    height: 22px; 
    background-color: #c6d2e7; 
    color: #2a3341; 
} 

Answer 1

那是因为你已经指定position: absolute你的元素。更改的规则如下定义将解决您的问题Checkout this Jsfiddle

#menu, #toolbar{ 
    display: table-cell; 
    width: 80%; 
} 

#toolbar{ 
    padding-right: 3px; 
    text-align: right; 
}