的替代方案是超文本电子邮件链接的标记。 JS 搞砸了我的下拉列表，因为它基于 标签

Question

我很困惑。为朋友开发一个网站，导航是我从 http://www.dynamicdrive.com/ 获得的下拉系统。

下拉列表的代码希望我将链接放入 标记中，并且 JS 将它们格式化为下拉元素。

我想要做的是在导航的“联系人”元素上有第二个下拉菜单，以提供联系方式详细信息和电子邮件链接。我已经成功地让它以我想要的方式工作，但我无法让电子邮件地址作为链接工作。如果我将其包装在 标记中，那么 JS 会将其拆分为另一个元素。

www.theartificialasylum.com/adex(mix_up).html

如果您查看右侧的下拉菜单，当您将鼠标悬停在“联系人”上时，您将有望明白我的意思。

如果您需要源代码，请告诉我，任何帮助将不胜感激！

这是我第一次真正涉足 Web 开发，我可以理解 javascript，但我需要很长时间才能理解。

html:

<!--1st drop down menu -->                                                   
<div id="dropmenu1_a" class="dropmenudiv_a" style="z-index:9000;"">
<a   href="artwork/nightclub_portraiture.html"><pre>NightClub Portraiture</pre></a>
<a href="artwork/wedding_photos.html"><pre>Weddings</pre></a>
<a href="artwork/urban_expo.html"><pre>Urban Expo</pre></a>
</div>

<!--2nd drop down menu -->                                                
<div id="dropmenu2_a" class="bar" style="width: 400px;" >
<a>
<pre><p class="thick">The Artificial Asylum Photography.</p></pre>
<pre>[AKA] Alistair Watt-Crawford.</pre>
<br><br>

<pre><p class="thick">Wedding and Event photography:</p></pre>
<pre>Bookings via: [email protected]</pre>
</a>

</div>


<script type="text/javascript">
//SYNTAX: tabdropdown.init("menu_id", [integer OR "auto"])
tabdropdown.init("colortab", 1)
</script>

CSS:

.dropmenudiv_a{
position:absolute;
top: 0;
border: 1px solid black; 
border-top-width: 8px; 
border-bottom-width: 0;
font:normal 12px Arial;
line-height:18px;
z-index:1000;
background-color: white;
width: 200px;
visibility: hidden;
}

.bar {
position:absolute;
top: 0; 
border: 1px solid black; /*THEME CHANGE HERE*/
border-top-width: 8px; 
border-bottom-width: 0;
font:normal 12px Arial;
line-height:18px;
z-index:1000;
background-color: white;
width: 200px;
visibility: hidden;
}

.bar a{
width: auto;
display: block;
text-indent: 5px;
border-top: 0 solid #678b3f;
border-bottom: 1px solid #000000; /*THEME CHANGE HERE*/
padding: 2px 0;
text-decoration: none;
color: black;
z-index:9000;
height:200px;
}

.dropmenudiv_a a{
width: auto;
display: block;
text-indent: 5px;
border-top: 0 solid #678b3f;
border-bottom: 1px solid #000000; /*THEME CHANGE HERE*/
padding: 2px 0;
text-decoration: none;
color: black;
z-index:9000;
}

JavaScript:

//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created: May 16th, 07'

var tabdropdown={
disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout
disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?
enableiframeshim: 1, //1 or 0, for true or false

//No need to edit beyond here////////////////////////
dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,
currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)

getposOffset:function(what, offsettype){
    var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
    var parentEl=what.offsetParent;
        while (parentEl!=null){
            totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
            parentEl=parentEl.offsetParent;
        }
    return totaloffset;
},

showhide:function(obj, e, obj2){ //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over
    if (this.ie || this.firefox)
        this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"
    if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){
        if (obj2.parentNode.className.indexOf("default")==-1) //if tab isn't a default selected one
            obj2.parentNode.className="selected"
        obj.visibility="visible"
        }
    else if (e.type=="click")
        obj.visibility="hidden"
},

iecompattest:function(){
    return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
},

clearbrowseredge:function(obj, whichedge){
    var edgeoffset=0
    if (whichedge=="rightedge"){
        var windowedge=this.ie && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15
        this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
    if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
        edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth
    }
    else{
        var topedge=this.ie && !window.opera? this.standardbody.scrollTop : window.pageYOffset
        var windowedge=this.ie && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18
        this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
        if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure){ //move up?
            edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
            if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
                edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
        }
        this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up
    }
    return edgeoffset
},

dropit:function(obj, e, dropmenuID){
    if (this.dropmenuobj!=null){ //hide previous menu
        this.dropmenuobj.style.visibility="hidden" //hide menu
        if (this.previousmenuitem!=null && this.previousmenuitem!=obj){
            if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) //If the tab isn't a default selected one
                this.previousmenuitem.parentNode.className=""
        }
    }
    this.clearhidemenu()
    if (this.ie||this.firefox){
        obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)}
        obj.onclick=function(){return !tabdropdown.disablemenuclick} //disable main menu item link onclick?
        this.dropmenuobj=document.getElementById(dropmenuID)
        this.dropmenuobj.onmouseover=function(){tabdropdown.clearhidemenu()}
        this.dropmenuobj.onmouseout=function(e){tabdropdown.dynamichide(e, obj)}
        this.dropmenuobj.onclick=function(){tabdropdown.delayhidemenu(obj)}
        this.showhide(this.dropmenuobj.style, e, obj)
        this.dropmenuobj.x=this.getposOffset(obj, "left")
        this.dropmenuobj.y=this.getposOffset(obj, "top")
        this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
        this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
        this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item)
        this.positionshim() //call iframe shim function
    }
},

contains_firefox:function(a, b) {
    while (b.parentNode)
    if ((b = b.parentNode) == a)
        return true;
    return false;
},

dynamichide:function(e, obj2){ //obj2 refers to tab menu item mouse is currently over
    var evtobj=window.event? window.event : e
    if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
        this.delayhidemenu(obj2)
    else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
        this.delayhidemenu(obj2)
},

delayhidemenu:function(obj2){
    this.delayhide=setTimeout(function(){tabdropdown.dropmenuobj.style.visibility='hidden'; if (obj2.parentNode.className.indexOf('default')==-1) obj2.parentNode.className=''},this.disappeardelay) //hide menu
},

clearhidemenu:function(){
    if (this.delayhide!="undefined")
        clearTimeout(this.delayhide)
},

positionshim:function(){ //display iframe shim function
    if (this.enableiframeshim && typeof this.shimobject!="undefined"){
        if (this.dropmenuobj.style.visibility=="visible"){
            this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
            this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px"
            this.shimobject.style.left=this.dropmenuobj.style.left
            this.shimobject.style.top=this.dropmenuobj.style.top
        }
    this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")? "block" : "none"
    }
},

hideshim:function(){
    if (this.enableiframeshim && typeof this.shimobject!="undefined")
        this.shimobject.style.display='none'
},

isSelected:function(menuurl){
var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "")
return (tabdropdown.currentpageurl==menuurl)
},

init:function(menuid, dselected){
    this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
    var menuitems=document.getElementById(menuid).getElementsByTagName("a")
    for (var i=0; i<menuitems.length; i++){
        if (menuitems[i].getAttribute("rel")){
            var relvalue=menuitems[i].getAttribute("rel")
            document.getElementById(relvalue).firstlink=document.getElementById(relvalue).getElementsByTagName("a")[0]
            menuitems[i].onmouseover=function(e){
                var event=typeof e!="undefined"? e : window.event
                tabdropdown.dropit(this, event, this.getAttribute("rel"))
            }
        }
        if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[i].href)){
            menuitems[i].parentNode.className+=" selected default"
            var setalready=true
        }
        else if (parseInt(dselected)==i)
            menuitems[i].parentNode.className+=" selected default"
    }
}

}

Answer 1

从菜单代码来看，在我看来，如果 标签没有 rel 属性，链接不会变成 drop -向下。您应该能够只添加联系链接而不使用 rel 标记。

如果此建议不适合您，请准确地向我们展示您尝试使用的 HTML 不适合您（最好是在工作/非工作示例中）。

Answer 2

如果我正确理解了你的问题，你就不能创建多个选项卡。或者它被删除了，因为你无法让它工作？

下面的代码是从您的页面复制的，并进行了一些更改。

<script type="text/javascript">
//SYNTAX: tabdropdown.init("menu_id", [integer OR "auto"]);
tabdropdown.init("colortab", "auto");
tabdropdown.init("your_second_tab", "auto");
</script>

然后添加 DIV，如 dropmenu1_a，其中包含“联系人”中的链接。