Javascript帮助

Question

在这个javascript的某个地方，它告诉我的网页在每个菜单项之间放置一个空格。 alt text http://img85.imageshack.us/img85/5340/screenshot20100127at204.png

以下是javascript：

//** Chrome Drop Down Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)

//** Updated: July 14th 06' to v2.0
    //1) Ability to "left", "center", or "right" align the menu items easily, just by modifying the CSS property "text-align".
    //2) Added an optional "swipe down" transitional effect for revealing the drop down menus.
    //3) Support for multiple Chrome menus on the same page.

//** Updated: Nov 14th 06' to v2.01- added iframe shim technique

//** Updated: July 23rd, 08 to v2.4
    //1) Main menu items now remain "selected" (CSS class "selected" applied) when user moves mouse into corresponding drop down menu. 
    //2) Adds ability to specify arbitrary HTML that gets added to the end of each menu item that carries a drop down menu (ie: a down arrow image).
    //3) All event handlers added to the menu are now unobstrusive, allowing you to define your own "onmouseover" or "onclick" events on the menu items.
    //4) Fixed elusive JS error in FF that sometimes occurs when mouse quickly moves between main menu items and drop down menus

//** Updated: Oct 29th, 08 to v2.5 (only .js file modified from v2.4)
    //1) Added ability to customize reveal animation speed (# of steps)
    //2) Menu now works in IE8 beta2 (a valid doctype at the top of the page is required)

var cssdropdown={
disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
dropdownindicator: '', //specify full HTML to add to end of each menu item with a drop down menu
enablereveal: [true, 5], //enable swipe effect? [true/false, steps (Number of animation steps. Integer between 1-20. Smaller=faster)]
enableiframeshim: 1, //enable "iframe shim" in IE5.5 to IE7? (1=yes, 0=no)

//No need to edit beyond here////////////////////////

dropmenuobj: null, asscmenuitem: null, domsupport: document.all || document.getElementById, standardbody: null, iframeshimadded: false, revealtimers: {},

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;
},

css:function(el, targetclass, action){
    var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig")
    if (action=="check")
        return needle.test(el.className)
    else if (action=="remove")
        el.className=el.className.replace(needle, "")
    else if (action=="add" && !needle.test(el.className))
        el.className+=" "+targetclass
},

showmenu:function(dropmenu, e){
    if (this.enablereveal[0]){
        if (!dropmenu._trueheight || dropmenu._trueheight<10)
            dropmenu._trueheight=dropmenu.offsetHeight
        clearTimeout(this.revealtimers[dropmenu.id])
        dropmenu.style.height=dropmenu._curheight=0
        dropmenu.style.overflow="hidden"
        dropmenu.style.visibility="visible"
        this.revealtimers[dropmenu.id]=setInterval(function(){cssdropdown.revealmenu(dropmenu)}, 10)
    }
    else{
        dropmenu.style.visibility="visible"
    }
    this.css(this.asscmenuitem, "selected", "add")
},

revealmenu:function(dropmenu, dir){
    var curH=dropmenu._curheight, maxH=dropmenu._trueheight, steps=this.enablereveal[1]
    if (curH<maxH){
        var newH=Math.min(curH, maxH)
        dropmenu.style.height=newH+"px"
        dropmenu._curheight= newH + Math.round((maxH-newH)/steps) + 1
    }
    else{ //if done revealing menu
        dropmenu.style.height="auto"
        dropmenu.style.overflow="hidden"
        clearInterval(this.revealtimers[dropmenu.id])
    }
},

clearbrowseredge:function(obj, whichedge){
    var edgeoffset=0
    if (whichedge=="rightedge"){
        var windowedge=document.all && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15
        var dropmenuW=this.dropmenuobj.offsetWidth
        if (windowedge-this.dropmenuobj.x < dropmenuW)  //move menu to the left?
            edgeoffset=dropmenuW-obj.offsetWidth
    }
    else{
        var topedge=document.all && !window.opera? this.standardbody.scrollTop : window.pageYOffset
        var windowedge=document.all && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18
        var dropmenuH=this.dropmenuobj._trueheight
        if (windowedge-this.dropmenuobj.y < dropmenuH){ //move up?
            edgeoffset=dropmenuH+obj.offsetHeight
            if ((this.dropmenuobj.y-topedge)<dropmenuH) //up no good either?
                edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
        }
    }
    return edgeoffset
},

dropit:function(obj, e, dropmenuID){
    if (this.dropmenuobj!=null) //hide previous menu
        this.hidemenu() //hide menu
    this.clearhidemenu()
    this.dropmenuobj=document.getElementById(dropmenuID) //reference drop down menu
    this.asscmenuitem=obj //reference associated menu item
    this.showmenu(this.dropmenuobj, e)
    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.positionshim() //call iframe shim function
},

positionshim:function(){ //display iframe shim function
    if (this.iframeshimadded){
        if (this.dropmenuobj.style.visibility=="visible"){
            this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
            this.shimobject.style.height=this.dropmenuobj._trueheight+"px"
            this.shimobject.style.left=parseInt(this.dropmenuobj.style.left)+"px"
            this.shimobject.style.top=parseInt(this.dropmenuobj.style.top)+"px"
            this.shimobject.style.display="block"
        }
    }
},

hideshim:function(){
    if (this.iframeshimadded)
        this.shimobject.style.display='none'
},

isContained:function(m, e){
    var e=window.event || e
    var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)
    while (c && c!=m)try {c=c.parentNode} catch(e){c=m}
    if (c==m)
        return true
    else
        return false
},

dynamichide:function(m, e){
    if (!this.isContained(m, e)){
        this.delayhidemenu()
    }
},

delayhidemenu:function(){
    this.delayhide=setTimeout("cssdropdown.hidemenu()", this.disappeardelay) //hide menu
},

hidemenu:function(){
    this.css(this.asscmenuitem, "selected", "remove")
    this.dropmenuobj.style.visibility='hidden'
    this.dropmenuobj.style.left=this.dropmenuobj.style.top="-1000px"
    this.hideshim()
},

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

addEvent:function(target, functionref, tasktype){
    if (target.addEventListener)
        target.addEventListener(tasktype, functionref, false);
    else if (target.attachEvent)
        target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)});
},

startchrome:function(){
    if (!this.domsupport)
        return
    this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
    for (var ids=0; ids<arguments.length; ids++){
        var menuitems=document.getElementById(arguments[ids]).getElementsByTagName("a")
        for (var i=0; i<menuitems.length; i++){
            if (menuitems[i].getAttribute("rel")){
                var relvalue=menuitems[i].getAttribute("rel")
                var asscdropdownmenu=document.getElementById(relvalue)
                this.addEvent(asscdropdownmenu, function(){cssdropdown.clearhidemenu()}, "mouseover")
                this.addEvent(asscdropdownmenu, function(e){cssdropdown.dynamichide(this, e)}, "mouseout")
                this.addEvent(asscdropdownmenu, function(){cssdropdown.delayhidemenu()}, "click")
                try{
                    menuitems[i].innerHTML=menuitems[i].innerHTML+" "+this.dropdownindicator
                }catch(e){}
                this.addEvent(menuitems[i], function(e){ //show drop down menu when main menu items are mouse over-ed
                    if (!cssdropdown.isContained(this, e)){
                        var evtobj=window.event || e
                        cssdropdown.dropit(this, evtobj, this.getAttribute("rel"))
                    }
                }, "mouseover")
                this.addEvent(menuitems[i], function(e){cssdropdown.dynamichide(this, e)}, "mouseout") //hide drop down menu when main menu items are mouse out
                this.addEvent(menuitems[i], function(){cssdropdown.delayhidemenu()}, "click") //hide drop down menu when main menu items are clicked on
            }
        } //end inner for
    } //end outer for
    if (this.enableiframeshim && document.all && !window.XDomainRequest && !this.iframeshimadded){ //enable iframe shim in IE5.5 thru IE7?
        document.write('<IFRAME id="iframeshim" src="about:blank" frameBorder="0" scrolling="no" style="left:0; top:0; position:absolute; display:none;z-index:90; background: transparent;"></IFRAME>')
        this.shimobject=document.getElementById("iframeshim") //reference iframe object
        this.shimobject.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)'
        this.iframeshimadded=true
    }
} //end startchrome

}

Answer 1

是的，我可能会认为这是你的CSS，而不是javascript。

Answer 2

尝试将每个元素设置为display:block和float:left。这将消除差距。