下面是原码-PHP教程,PHP应用

function folder(folderdescription, hreference,parentid,target) {
   //constant data;

   this.desc = folderdescription;
   this.parentid=parentid;
   this.hreference = hreference;
   this.target=target;
   this.id = index;
   this.navobj = 0;
   this.iconimg = 0;
   this.nodeimg = 0;
   this.islastnode = 0;

   // dynamic data
   this.isroot = true;
   this.isopen = true;
   this.iconsrc=imageurl+"ftv2folderopen.gif";
   this.iconroot =imageurl+"ftv2folderopen.gif";

   this.children = new array;
   this.nchildren = 0;

   // methods
   this.initialize = initializefolder;
   this.setstate = setstatefolder;
   this.addchild = addchild;

   this.createindex = createentryindex;
   this.hide = hidefolder;
   this.display = display;
   this.renderob = drawfolder;
   this.totalheight = totalheight;
   this.subentries = foldersubentries;
   this.outputlink = outputfolderlink;

}

function setstatefolder(isopen) {
   var subentries;
   var totalheight;
   var fit = 0;
   var i = 0;

   if(isopen == this.isopen)
       return;

   if(browserversion == 2) {
       totalheight = 0
       for(i = 0; i < this.nchildren; i++)
           totalheight = totalheight + this.children[i].navobj.clip.height;
       subentries = this.subentries();

       if(this.isopen)
           totalheight = 0 – totalheight;

       for(fit = this.id + subentries + 1; fit < nentries; fit++)
           indexofentries[fit].navobj.moveby(0, totalheight);
   }

   this.isopen = isopen;
   propagatechangesinstate(this);
}

function propagatechangesinstate(folder) {

   var i = 0;
   if(folder.isopen) {
       if(folder.nodeimg) {
           if(folder.islastnode)
               folder.nodeimg.src = imageurl+"ftv2mlastnode.gif";
           else
               folder.nodeimg.src = imageurl+"ftv2mnode.gif";
       }

       if(this.isroot)
           folder.iconimg.src = imageurl+"ftv2_mail.gif";
       else
           folder.iconimg.src = imageurl+"ftv2folderopen.gif";

       for(i = 0; i < folder.nchildren; i++)
           folder.children[i].display();
   }
   else {
       if(folder.nodeimg) {
           if(folder.islastnode)

               folder.nodeimg.src = imageurl+"ftv2plastnode.gif";
           else
               folder.nodeimg.src = imageurl+"ftv2pnode.gif";
       }

       if(this.isroot)
           folder.iconimg.src = imageurl+"ftv2_mail.gif";
       else
           folder.iconimg.src = imageurl+"ftv2folderclosed.gif";

       for(i = 0; i < folder.nchildren; i++)
           folder.children[i].hide();
   }
}

function hidefolder() {
    if(browserversion == 1) {
        if(this.navobj.style.display == "none")
            return;

        this.navobj.style.display = "none";
    }
    else {
        if(this.navobj.visibility == "hiden")
            return;

        this.navobj.visibility = "hiden";
    }

    this.setstate(0);
}

function initializefolder(level, lastnode, leftside) {
    var i = 0;
    var j = 0;

    var numberoffolders;
    var numberofdocs;

    nc = this.nchildren;
    this.createindex();

    var nc;
    var auxev = "";

    if(browserversion > 0)
        auxev = "<a href=javascript: clickonnode("+this.id+")>";
    else
        auxev = "<a>";

    if(level > 0) {
        if(lastnode) { //the last brother in the children array
           this.renderob(leftside + auxev + "<img name=nodeicon" + this.id + " src="+imageurl+"ftv2mlastnode.gif width=16 height=22 border=0></a>");
           leftside = leftside + "<img src=\"+imageurl+"ftv2blank.gif\ width=16 height=22>";
           this.islastnode = 1;
        }
        else {
            this.renderob(leftside + auxev + "<img name=nodeicon" + this.id + "src=\"+imageurl+"ftv2mnode.gif\ width=16 height=22 border=0></a>");
            leftside = leftside + "<img src=\"+imageurl+"ftv2vertline.gif\ width=16 height=22>";
            this.islastnode = 0;
        }
    }
    else {
        this.renderob("");
    }

    if(nc > 0) {
        level = level + 1;
        for(i = 0; i < this.nchildren; i++) {
            if(i == this.nchildren-1)
                this.children[i].initialize(level, 1, leftside);
            else
                this.children[i].initialize(level, 0, leftside);
        }
    }
}

function drawfolder(leftside) {
    if(browserversion == 2) {
        if(!doc.ypos)
          doc.ypos = 8;

        doc.write("<layer id=folder" + this.id + " top=" + doc.ypos + " visibility=hiden>");
    }
    doc.write("<table")

    if(browserversion == 1)
        doc.write(" id=folder" + this.id + " style=position:block; ");

    doc.write(" border=0 cellspacing=0 cellpadding=0>");
    doc.write("<tr><td>");
    doc.write(leftside);

    this.outputlink();

    doc.write("<img name=foldericon" + this.id + " ");
    if(leftside == ) {
        doc.write("src=" + this.iconroot+" border=0></a>");
    }
    else {
        doc.write("src=" + this.iconsrc+" border=0></a>");
    }

    doc.write("</td><td nowrap>");

    doc.write("<div class=\"fldrroot\">");

    if(leftside == ) {
       if(usetextlinks) {
          this.outputlink();
          doc.write(<font size="2" color="+flodercolor+">+this.desc + "</font></a>");
       }
       else
         doc.write(this.desc);
    }
    else {
        doc.write("<a  href=javascript: clickonnode("+this.id+")>");
        doc.write(<font size="2" color="+flodercolor+">+this.desc + "</font></a>");
    }

    doc.write("</div>");
    doc.write("</td>");
    doc.write("</table>");

    if(browserversion == 2) {
        doc.write("</layer>");
    }

    if(browserversion == 1) {
        this.navobj = doc.all["folder"+this.id];
        this.iconimg = doc.all["foldericon"+this.id]
        this.nodeimg = doc.all["nodeicon"+this.id]
    }
    else if(browserversion == 2) {
        this.navobj = doc.layers["folder"+this.id];
        this.iconimg = this.navobj.document.images["foldericon"+this.id];
        this.nodeimg = this.navobj.document.images["nodeicon"+this.id];
        doc.ypos = doc.ypos + this.navobj.clip.height;
    }
}