Vertical DHTML Slidedown Menu Code

This is a drop-down menu script, it will slide down vertically when the mouse hover. It is useful when you need to create many links or sub-links in single page. You can change the colors of background, border, and fonts to match your website layout.

Script Demo:

Demo

Dynamic HTML Code:

Insert this code into <head> tags

Insert this code into <body> tags

<script type='text/javascript'>

function Go(){return}

/***********************************************************************
    YOU CAN MANUALLY CHANGE THE MENU HERE, BUT BE VERY CAREFUL !
***********************************************************************/

Menu1=new Array("Links 1","http://","",4,20,80);
  Menu1_1=new Array("Sub Links 1","http://","",3,20,80);
   Menu1_1_1=new Array("Sub Link 1","http://","",0,20,80);
   Menu1_1_2=new Array("Sub Link 2","http://","",0,20,0);
   Menu1_1_3=new Array("Sub Link 3","http://","",0,20,80);
  Menu1_2=new Array("Sub Links 2","http://","",0,20,0);
  Menu1_3=new Array("Sub Links 3","http://","",0,20,80);
  Menu1_4=new Array("Sub Links 4","http://","",0,20,80);

Menu2=new Array("Links 2","http://","",1,0,80);
  Menu2_1=new Array("Sub Link 1","http://","",1,20,80);
   Menu2_1_1=new Array("Sub Link 2","http://","",1,20,80);
    Menu2_1_1_1=new Array("Sub Link 3","http://","",1,20,80);
     Menu2_1_1_1_1=new Array("Sub Link 4","http://","",0,20,80);

Menu3=new Array("Links 3","http://","",1,0,80);
  Menu3_1=new Array("Sub Links 1 ","http://","",0,20,80);

Menu4=new Array("Links 4","http://","",0,0,80);

Menu5=new Array("Links 5","http://","",0,20,80);


var NoOffFirstLineMenus=5;  // Number of first level items
var LowBgColor='0000FF';    // Background color when mouse is not over
var LowSubBgColor='0000FF';  // Background color when mouse is not over on subs
var HighBgColor='00CCFF';  // Background color when mouse is over
var HighSubBgColor='00CCFF';  // Background color when mouse is over on subs
var FontLowColor='FFFFFF';  // Font color when mouse is not over
var FontSubLowColor='FFFFFF';  // Font color subs when mouse is not over
var FontHighColor='0000FF';  // Font color when mouse is over
var FontSubHighColor='0000FF';  // Font color subs when mouse is over
var BorderColor='333399';  // Border color
var BorderSubColor='333399';  // Border color for subs
var BorderWidth=1;    // Border width
var BorderBtwnElmnts=1;    // Border between elements 1 or 0
var FontFamily="Tahoma, Verdana, Arial"          // Font family menu items
var FontSize=10;      // Font size menu items
var FontBold=0;      // Bold menu items 1 or 0
var FontItalic=0;    // Italic menu items 1 or 0
var MenuTextCentered='left';  // Item text position 'left', 'center' or 'right'
var MenuCentered='left';  // Menu horizontal position 'left', 'center' or 'right'
var MenuVerticalCentered='top';  // Menu vertical position 'top', 'middle','bottom' or static
var ChildOverlap=.2;    // horizontal overlap child/ parent
var ChildVerticalOverlap=.2;  // vertical overlap child/ parent
var StartTop=1;    // Menu offset x coordinate
var StartLeft=1;    // Menu offset y coordinate
var VerCorrect=0;    // Multiple frames y correction
var HorCorrect=0;    // Multiple frames x correction
var LeftPaddng=3;    // Left padding
var TopPaddng=2;    // Top padding
var FirstLineHorizontal=0;  // SET TO 1 FOR HORIZONTAL MENU, 0 FOR VERTICAL
var MenuFramesVertical=1;  // Frames in cols or rows 1 or 0
var DissapearDelay=1000;  // delay before menu folds in
var TakeOverBgColor=1;    // Menu frame takes over background color subitem frame
var FirstLineFrame='navig';  // Frame where first level appears
var SecLineFrame='space';  // Frame where sub levels appear
var DocTargetFrame='space';  // Frame where target documents appear
var TargetLoc='';    // span id for relative positioning
var HideTop=0;      // Hide first level when loading new document 1 or 0
var MenuWrap=1;      // enables/ disables menu wrap 1 or 0
var RightToLeft=0;    // enables/ disables right to left unfold 1 or 0
var UnfoldsOnClick=0;    // Level 1 unfolds onclick/ onmouseover
var WebMasterCheck=0;    // menu tree checking on or off 1 or 0
var ShowArrow=1;    // Uses arrow gifs when 1
var KeepHilite=1;    // Keep selected path highligthed
var Arrws=['tridark.gif',5,10,'tridarkdown.gif',10,5,'tridarkleft.gif',5,10];  // Arrow source, width and height


/***********************************************************************
   DO NOT EDIT ANYTHING BELOW THIS LINE - IT WILL BREAK THE SCRIPT !
***********************************************************************/

var AgntUsr=navigator.userAgent.toLowerCase();
var DomYes=document.getElementById?1:0;
var NavYes=AgntUsr.indexOf('mozilla')!=-1&&AgntUsr.indexOf('compatible')==-1?1:0;
var ExpYes=AgntUsr.indexOf('msie')!=-1?1:0;
var Opr=AgntUsr.indexOf('opera')!=-1?1:0;
var Opr6orless=window.opera && navigator.userAgent.search(/opera.[1-6]/i)!=-1 //DynamicDrive.com added code
var DomNav=DomYes&&NavYes?1:0;
var DomExp=DomYes&&ExpYes?1:0;
var Nav4=NavYes&&!DomYes&&document.layers?1:0;
var Exp4=ExpYes&&!DomYes&&document.all?1:0;
var PosStrt=(NavYes||ExpYes)&&!Opr6orless?1:0;
var FrstLoc,ScLoc,DcLoc;
var ScWinWdth,ScWinHght,FrstWinWdth,FrstWinHght;
var ScLdAgainWin;
var FirstColPos,SecColPos,DocColPos;
var RcrsLvl=0;
var FrstCreat=1,Loadd=0,Creatd=0,IniFlg,AcrssFrms=1;
var FrstCntnr=null,CurrntOvr=null,CloseTmr=null;
var CntrTxt,TxtClose,ImgStr;
var Ztop=100;
var ShwFlg=0;
var M_StrtTp=StartTop,M_StrtLft=StartLeft;
var StaticPos=0;
var LftXtra=DomNav&&!Opr?LeftPaddng:0; //Changed for Opera
var TpXtra=DomNav?TopPaddng:0;
var M_Hide=Nav4?'hide':'hidden';
var M_Show=Nav4?'show':'visible';
var Par=parent.frames[0]&&FirstLineFrame!=SecLineFrame?parent:window;
var Doc=Par.document;
var Bod=Doc.body;
var Trigger=NavYes&&!Opr?Par:Bod; //Changed for Opera

MenuTextCentered=MenuTextCentered==1||MenuTextCentered=='center'?'center':MenuTextCentered==0||MenuTextCentered!='right'?'left':'right';
WbMstrAlrts=["Item not defined: ","Item needs height: ","Item needs width: "];

if(Trigger.onload)Dummy=Trigger.onload;
if(DomNav||Opr)Trigger.addEventListener('load',Go,false); //Changed for Opera
else Trigger.onload=Go;

function Dummy(){return}

function CnclSlct(){return false}

function RePos(){
  FrstWinWdth=ExpYes?FrstLoc.document.body.clientWidth:FrstLoc.innerWidth;
  FrstWinHght=ExpYes?FrstLoc.document.body.clientHeight:FrstLoc.innerHeight;
  ScWinWdth=ExpYes?ScLoc.document.body.clientWidth:ScLoc.innerWidth;
  ScWinHght=ExpYes?ScLoc.document.body.clientHeight:ScLoc.innerHeight;
  if(MenuCentered=='justify'&&FirstLineHorizontal){
    FrstCntnr.style.width=FrstWinWdth;
    ClcJus();
    var P=FrstCntnr.FrstMbr,W=Menu1[5],i;
    for(i=0;i<NoOffFirstLineMenus;i++){P.style.width=W;P=P.PrvMbr}}
  StaticPos=-1;
  if(TargetLoc)ClcTrgt();
  if(MenuCentered)ClcLft();
  if(MenuVerticalCentered)ClcTp();
  PosMenu(FrstCntnr,StartTop,StartLeft)}

function UnLoaded(){
  if(CloseTmr)clearTimeout(CloseTmr);
  Loadd=0; Creatd=0;
  if(HideTop){
    var FCStyle=Nav4?FrstCntnr:FrstCntnr.style;
    FCStyle.visibility=M_Hide}}

function ReDoWhole(){
  if(ScWinWdth!=ScLoc.innerWidth||ScWinHght!=ScLoc.innerHeight||FrstWinWdth!=FrstLoc.innerWidth||FrstWinHght!=FrstLoc.innerHeight)Doc.location.reload()}

function Check(WMnu,NoOf){
  var i,array,ArrayLoc;
  ArrayLoc=parent.frames[0]?parent.frames[FirstLineFrame]:self;
  for(i=0;i<NoOf;i++){
    array=WMnu+eval(i+1);
    if(!ArrayLoc[array]){WbMstrAlrt(0,array); return false}
    if(i==0){  if(!ArrayLoc[array][4]){WbMstrAlrt(1,array); return false}
      if(!ArrayLoc[array][5]){WbMstrAlrt(2,array); return false}}
    if(ArrayLoc[array][3])if(!Check(array+'_',ArrayLoc[array][3])) return false}
  return true}

function WbMstrAlrt(No,Xtra){
  return confirm(WbMstrAlrts[No]+Xtra+'   ')}

function Go(){
  Dummy();
  if(Loadd||!PosStrt)return;
  BeforeStart();
  Creatd=0; Loadd=1;
  status='Building menu';
  if(FrstCreat){
    if(FirstLineFrame =="" || !parent.frames[FirstLineFrame]){
      FirstLineFrame=SecLineFrame;
      if(FirstLineFrame =="" || !parent.frames[FirstLineFrame]){
        FirstLineFrame=SecLineFrame=DocTargetFrame;
        if(FirstLineFrame =="" || !parent.frames[FirstLineFrame])FirstLineFrame=SecLineFrame=DocTargetFrame=''}}
    if(SecLineFrame =="" || !parent.frames[SecLineFrame]){
      SecLineFrame=DocTargetFrame;
      if(SecLineFrame =="" || !parent.frames[SecLineFrame])SecLineFrame=DocTargetFrame=FirstLineFrame}
    if(DocTargetFrame =="" || !parent.frames[DocTargetFrame])DocTargetFrame=SecLineFrame;
    if(WebMasterCheck){  if(!Check('Menu',NoOffFirstLineMenus)){status='build aborted';return}}
    FrstLoc=FirstLineFrame!=""?parent.frames[FirstLineFrame]:window;
    ScLoc=SecLineFrame!=""?parent.frames[SecLineFrame]:window;
    DcLoc=DocTargetFrame!=""?parent.frames[DocTargetFrame]:window;
    if (FrstLoc==ScLoc) AcrssFrms=0;
    if (AcrssFrms)FirstLineHorizontal=MenuFramesVertical?0:1;
    FrstWinWdth=ExpYes?FrstLoc.document.body.clientWidth:FrstLoc.innerWidth;
    FrstWinHght=ExpYes?FrstLoc.document.body.clientHeight:FrstLoc.innerHeight;
    ScWinWdth=ExpYes?ScLoc.document.body.clientWidth:ScLoc.innerWidth;
    ScWinHght=ExpYes?ScLoc.document.body.clientHeight:ScLoc.innerHeight;
    if(Nav4){  CntrTxt=MenuTextCentered!='left'?"<div align='"+MenuTextCentered+"'>":"";
      TxtClose="</font>"+MenuTextCentered!='left'?"</div>":""}}
  FirstColPos=Nav4?FrstLoc.document:FrstLoc.document.body;
  SecColPos=Nav4?ScLoc.document:ScLoc.document.body;
  DocColPos=Nav4?DcLoc.document:ScLoc.document.body;
  if (TakeOverBgColor)FirstColPos.bgColor=AcrssFrms?SecColPos.bgColor:DocColPos.bgColor;
  if(MenuCentered=='justify'&&FirstLineHorizontal)ClcJus();
  if(FrstCreat){
    FrstCntnr=CreateMenuStructure('Menu',NoOffFirstLineMenus);
    FrstCreat=AcrssFrms?0:1}
  else CreateMenuStructureAgain('Menu',NoOffFirstLineMenus);
  if(TargetLoc)ClcTrgt();
  if(MenuCentered)ClcLft();
  if(MenuVerticalCentered)ClcTp();
  PosMenu(FrstCntnr,StartTop,StartLeft);
  IniFlg=1;
  Initiate();
  Creatd=1;
  if (AcrssFrms)   //Added for Opera
    {   //Added for Opera
    ScLdAgainWin=ExpYes?ScLoc.document.body:ScLoc;
    ScLdAgainWin.onunload=UnLoaded;
    }   //Added for Opera
  Trigger.onresize=Nav4?ReDoWhole:RePos;
  AfterBuild();
  if(MenuVerticalCentered=='static'&&!AcrssFrms)setInterval('KeepPos()',250);
  status='Menu ready for use'}

function KeepPos(){
  var TS=ExpYes?FrstLoc.document.body.scrollTop:FrstLoc.pageYOffset;
  if(TS!=StaticPos){
    var FCStyle=Nav4?FrstCntnr:FrstCntnr.style;
    FCStyle.top=FrstCntnr.OrgTop=StartTop+TS;StaticPos=TS}}

function ClcJus(){
  var a=BorderBtwnElmnts?1:2,b=BorderBtwnElmnts?BorderWidth:0;
  var Size=Math.round(((FrstWinWdth-a*BorderWidth)/NoOffFirstLineMenus)-b),i,j;
  for(i=1;i<NoOffFirstLineMenus+1;i++){j=eval('Menu'+i);j[5]=Size}
  StartLeft=0}

function ClcTrgt(){
  var TLoc=Nav4?FrstLoc.document.layers[TargetLoc]:DomYes?FrstLoc.document.getElementById(TargetLoc):FrstLoc.document.all[TargetLoc];
  StartTop=M_StrtTp;
  StartLeft=M_StrtLft;
  if(DomYes){
    while(TLoc){StartTop+=TLoc.offsetTop;StartLeft+=TLoc.offsetLeft;TLoc=TLoc.offsetParent}}
  else{  StartTop+=Nav4?TLoc.pageY:TLoc.offsetTop;StartLeft+=Nav4?TLoc.pageX:TLoc.offsetLeft}}

function ClcLft(){
  if(MenuCentered!='left'&&MenuCentered!='justify'){
    var Size=FrstWinWdth-(!Nav4?parseInt(FrstCntnr.style.width):FrstCntnr.clip.width);
    StartLeft=M_StrtLft;
    StartLeft+=MenuCentered=='right'?Size:Size/2}}

function ClcTp(){
  if(MenuVerticalCentered!='top'&&MenuVerticalCentered!='static'){
    var Size=FrstWinHght-(!Nav4?parseInt(FrstCntnr.style.height):FrstCntnr.clip.height);
    StartTop=M_StrtTp;
    StartTop+=MenuVerticalCentered=='bottom'?Size:Size/2}}

function PosMenu(CntnrPntr,Tp,Lt){
  var Topi,Lefti,Hori;
  var Cntnr=CntnrPntr;
  var Mmbr=Cntnr.FrstMbr;
  var CntnrStyle=!Nav4?Cntnr.style:Cntnr;
  var MmbrStyle=!Nav4?Mmbr.style:Mmbr;
  var PadL=Mmbr.value.indexOf('<')==-1?LftXtra:0;
  var PadT=Mmbr.value.indexOf('<')==-1?TpXtra:0;
  var MmbrWt=!Nav4?parseInt(MmbrStyle.width)+PadL:MmbrStyle.clip.width;
  var MmbrHt=!Nav4?parseInt(MmbrStyle.height)+PadT:MmbrStyle.clip.height;
  var CntnrWt=!Nav4?parseInt(CntnrStyle.width):CntnrStyle.clip.width;
  var CntnrHt=!Nav4?parseInt(CntnrStyle.height):CntnrStyle.clip.height;
  var SubTp,SubLt;
  RcrsLvl++;
  if (RcrsLvl==1 && AcrssFrms)!MenuFramesVertical?Tp=FrstWinHght-CntnrHt+(Nav4?4:0):Lt=RightToLeft?0:FrstWinWdth-CntnrWt+(Nav4?4:0);
  if (RcrsLvl==2 && AcrssFrms)!MenuFramesVertical?Tp=0:Lt=RightToLeft?ScWinWdth-CntnrWt:0;
  if (RcrsLvl==2 && AcrssFrms){Tp+=VerCorrect;Lt+=HorCorrect}
  CntnrStyle.top=RcrsLvl==1?Tp:0;
  Cntnr.OrgTop=Tp;
  CntnrStyle.left=RcrsLvl==1?Lt:0;
  Cntnr.OrgLeft=Lt;
  if (RcrsLvl==1 && FirstLineHorizontal){
    Hori=1;Lefti=CntnrWt-MmbrWt-2*BorderWidth;Topi=0}
  else{  Hori=Lefti=0;Topi=CntnrHt-MmbrHt-2*BorderWidth}
  while(Mmbr!=null){
    MmbrStyle.left=Lefti+BorderWidth;
    MmbrStyle.top=Topi+BorderWidth;
    if(Nav4)Mmbr.CmdLyr.moveTo(Lefti+BorderWidth,Topi+BorderWidth);
    if(Mmbr.ChildCntnr){
      if(RightToLeft)ChldCntnrWdth=Nav4?Mmbr.ChildCntnr.clip.width:parseInt(Mmbr.ChildCntnr.style.width);
      if(Hori){  SubTp=Topi+MmbrHt+2*BorderWidth;
        SubLt=RightToLeft?Lefti+MmbrWt-ChldCntnrWdth:Lefti}
      else{  SubLt=RightToLeft?Lefti-ChldCntnrWdth+ChildOverlap*MmbrWt+BorderWidth:Lefti+(1-ChildOverlap)*MmbrWt+BorderWidth;
        SubTp=RcrsLvl==1&&AcrssFrms?Topi:Topi+ChildVerticalOverlap*MmbrHt}
      PosMenu(Mmbr.ChildCntnr,SubTp,SubLt)}
    Mmbr=Mmbr.PrvMbr;
    if(Mmbr){  MmbrStyle=!Nav4?Mmbr.style:Mmbr;
      PadL=Mmbr.value.indexOf('<')==-1?LftXtra:0;
      PadT=Mmbr.value.indexOf('<')==-1?TpXtra:0;
      MmbrWt=!Nav4?parseInt(MmbrStyle.width)+PadL:MmbrStyle.clip.width;
      MmbrHt=!Nav4?parseInt(MmbrStyle.height)+PadT:MmbrStyle.clip.height;
      Hori?Lefti-=BorderBtwnElmnts?(MmbrWt+BorderWidth):(MmbrWt):Topi-=BorderBtwnElmnts?(MmbrHt+BorderWidth):(MmbrHt)}}
  RcrsLvl--}

function Initiate(){
  if(IniFlg){  Init(FrstCntnr);IniFlg=0;
    if(ShwFlg)AfterCloseAll();ShwFlg=0}}

function Init(CntnrPntr){
  var Mmbr=CntnrPntr.FrstMbr;
  var MCStyle=Nav4?CntnrPntr:CntnrPntr.style;
  RcrsLvl++;
  MCStyle.visibility=RcrsLvl==1?M_Show:M_Hide;
  while(Mmbr!=null){
    if(Mmbr.Hilite){Mmbr.Hilite=0;if(KeepHilite)LowItem(Mmbr)}
    if(Mmbr.ChildCntnr) Init(Mmbr.ChildCntnr);
    Mmbr=Mmbr.PrvMbr}
  RcrsLvl--}

function ClearAllChilds(Pntr){
  var CPCCStyle;
  while (Pntr){
    if(Pntr.Hilite){
      Pntr.Hilite=0;
      if(KeepHilite)LowItem(Pntr);
      if(Pntr.ChildCntnr){
        CPCCStyle=Nav4?Pntr.ChildCntnr:Pntr.ChildCntnr.style;
        CPCCStyle.visibility=M_Hide;
        ClearAllChilds(Pntr.ChildCntnr.FrstMbr)}
      break}
    Pntr=Pntr.PrvMbr}}

function GoTo(){
  if(this.LinkTxt){
    status='';
    var HP=Nav4?this.LowLyr:this;
    LowItem(HP);
    this.LinkTxt.indexOf('javascript:')!=-1?eval(this.LinkTxt):DcLoc.location.href=this.LinkTxt}}

function HiliteItem(P){
  if(Nav4){
    if(P.ro)P.document.images[P.rid].src=P.ri2;
    else{  if(P.HiBck)P.bgColor=P.HiBck;
      if(P.value.indexOf('<img')==-1){
        P.document.write(P.Ovalue);
        P.document.close()}}}
  else{  if(P.ro){  var Lc=P.Level==1?FrstLoc:ScLoc;
      Lc.document.images[P.rid].src=P.ri2}
    else{  if(P.HiBck)P.style.backgroundColor=P.HiBck;
      if(P.HiFntClr)P.style.color=P.HiFntClr}}
  P.Hilite=1}

function LowItem(P){
  if(P.ro){  if(Nav4)P.document.images[P.rid].src=P.ri1;
    else{  var Lc=P.Level==1?FrstLoc:ScLoc;
      Lc.document.images[P.rid].src=P.ri1}}
  else{  if(Nav4){  if(P.LoBck)P.bgColor=P.LoBck;
      if(P.value.indexOf('<img')==-1){
        P.document.write(P.value);
        P.document.close()}}
    else{  if(P.LoBck)P.style.backgroundColor=P.LoBck;
      if(P.LwFntClr)P.style.color=P.LwFntClr}}}

function OpenMenu(){
  if(!Loadd||!Creatd) return;
  var TpScrlld=ExpYes?ScLoc.document.body.scrollTop:ScLoc.pageYOffset;
  var LScrlld=ExpYes?ScLoc.document.body.scrollLeft:ScLoc.pageXOffset;
  var CCnt=Nav4?this.LowLyr.ChildCntnr:this.ChildCntnr;
  var ThisHt=Nav4?this.clip.height:parseInt(this.style.height);
  var ThisWt=Nav4?this.clip.width:parseInt(this.style.width);
  var ThisLft=AcrssFrms&&this.Level==1&&!FirstLineHorizontal?0:Nav4?this.Container.left:parseInt(this.Container.style.left);
  var ThisTp=AcrssFrms&&this.Level==1&&FirstLineHorizontal?0:Nav4?this.Container.top:parseInt(this.Container.style.top);
  var HP=Nav4?this.LowLyr:this;
  CurrntOvr=this;
  IniFlg=0;
  ClearAllChilds(this.Container.FrstMbr);
  HiliteItem(HP);
  if(CCnt!=null){
    if(!ShwFlg){ShwFlg=1;  BeforeFirstOpen()}
    var CCW=Nav4?this.LowLyr.ChildCntnr.clip.width:parseInt(this.ChildCntnr.style.width);
    var CCH=Nav4?this.LowLyr.ChildCntnr.clip.height:parseInt(this.ChildCntnr.style.height);
    var ChCntTL=Nav4?this.LowLyr.ChildCntnr:this.ChildCntnr.style;
    var SubLt=AcrssFrms&&this.Level==1?CCnt.OrgLeft+ThisLft+LScrlld:CCnt.OrgLeft+ThisLft;
    var SubTp=AcrssFrms&&this.Level==1?CCnt.OrgTop+ThisTp+TpScrlld:CCnt.OrgTop+ThisTp;
    if(MenuWrap){
      if(RightToLeft){
        if(SubLt<LScrlld)SubLt=this.Level==1?LScrlld:SubLt+(CCW+(1-2*ChildOverlap)*ThisWt);
        if(SubLt+CCW>ScWinWdth+LScrlld)SubLt=ScWinWdth+LScrlld-CCW}
      else{  if(SubLt+CCW>ScWinWdth+LScrlld)SubLt=this.Level==1?ScWinWdth+LScrlld-CCW:SubLt-(CCW+(1-2*ChildOverlap)*ThisWt);
        if(SubLt<LScrlld)SubLt=LScrlld}
      if(SubTp+CCH>TpScrlld+ScWinHght)SubTp=this.Level==1?SubTp=TpScrlld+ScWinHght-CCH:SubTp-CCH+(1-2*ChildVerticalOverlap)*ThisHt;
      if(SubTp<TpScrlld)SubTp=TpScrlld}
    ChCntTL.top=SubTp;ChCntTL.left=SubLt;ChCntTL.visibility=M_Show}
  status=this.LinkTxt}

function OpenMenuClick(){
  if(!Loadd||!Creatd) return;
  var HP=Nav4?this.LowLyr:this;
  CurrntOvr=this;
  IniFlg=0;
  ClearAllChilds(this.Container.FrstMbr);
  HiliteItem(HP);
  status=this.LinkTxt}

function CloseMenu(){
  if(!Loadd||!Creatd) return;
  if(!KeepHilite){
    var HP=Nav4?this.LowLyr:this;
    LowItem(HP)}
  status='';
  if(this==CurrntOvr){
    IniFlg=1;
    if(CloseTmr)clearTimeout(CloseTmr);
    CloseTmr=setTimeout('Initiate(CurrntOvr)',DissapearDelay)}}

function CntnrSetUp(Wdth,Hght,NoOff){
  var x=RcrsLvl==1?BorderColor:BorderSubColor;
  this.FrstMbr=null;
  this.OrgLeft=this.OrgTop=0;
  if(x)this.bgColor=x;
  if(Nav4){  this.visibility='hide';
    this.resizeTo(Wdth,Hght)}
  else{  if(x)this.style.backgroundColor=x;
    this.style.width=Wdth;
    this.style.height=Hght;
    this.style.fontFamily=FontFamily;
    this.style.fontWeight=FontBold?'bold':'normal';
    this.style.fontStyle=FontItalic?'italic':'normal';
    this.style.fontSize=FontSize+'pt';
    this.style.zIndex=RcrsLvl+Ztop}}

function MbrSetUp(MmbrCntnr,PrMmbr,WhatMenu,Wdth,Hght){
  var Location=RcrsLvl==1?FrstLoc:ScLoc;
  var MemVal=eval(WhatMenu+'[0]');
  var t,T,L,W,H,S;
  var a,b,c,d;
  this.PrvMbr=PrMmbr;
  this.Level=RcrsLvl;
  this.LinkTxt=eval(WhatMenu+'[1]');
  this.Container=MmbrCntnr;
  this.ChildCntnr=null;
  this.Hilite=0;
  this.style.overflow='hidden';
  this.style.cursor=ExpYes&&(this.LinkTxt||(RcrsLvl==1&&UnfoldsOnClick))?'hand':'default';
  this.ro=0;
  if(MemVal.indexOf('rollover')!=-1){
    this.ro=1;
    this.ri1=MemVal.substring(MemVal.indexOf(':')+1,MemVal.lastIndexOf(':'));
    this.ri2=MemVal.substring(MemVal.lastIndexOf(':')+1,MemVal.length);
    this.rid=WhatMenu+'i';MemVal="<img src='"+this.ri1+"' name='"+this.rid+"'>"}
  this.value=MemVal;
  if(RcrsLvl==1){
    a=LowBgColor;
    b=HighBgColor;
    c=FontLowColor;
    d=FontHighColor}
  else{  a=LowSubBgColor;
    b=HighSubBgColor;
    c=FontSubLowColor;
    d=FontSubHighColor}
  this.LoBck=a;
  this.LwFntClr=c;
  this.HiBck=b;
  this.HiFntClr=d;
  this.style.color=this.LwFntClr;
  if(this.LoBck)this.style.backgroundColor=this.LoBck;
  this.style.textAlign=MenuTextCentered;
  if(eval(WhatMenu+'[2]'))this.style.backgroundImage="url(\'"+eval(WhatMenu+'[2]')+"\')";
  if(MemVal.indexOf('<')==-1){
    this.style.width=Wdth-LftXtra;
    this.style.height=Hght-TpXtra;
    this.style.paddingLeft=LeftPaddng;
    this.style.paddingTop=TopPaddng}
  else{  this.style.width=Wdth;
    this.style.height=Hght}
  if(MemVal.indexOf('<')==-1&&DomYes){
    t=Location.document.createTextNode(MemVal);
    this.appendChild(t)}
  else this.innerHTML=MemVal;
  if(eval(WhatMenu+'[3]')&&ShowArrow){
    a=RcrsLvl==1&&FirstLineHorizontal?3:RightToLeft?6:0;
    S=Arrws[a];
    W=Arrws[a+1];
    H=Arrws[a+2];
    T=RcrsLvl==1&&FirstLineHorizontal?Hght-H-2:(Hght-H)/2;
    L=RightToLeft?2:Wdth-W-2;
    if(DomYes){

      t=Location.document.createElement('img');
      this.appendChild(t);
      t.style.position='absolute';
      t.src=S;

      t.style.width=W;
      t.style.height=H;
      t.style.top=T;
      t.style.left=L}
    else{  MemVal+="<div style='position:absolute; top:"+T+"; left:"+L+"; width:"+W+"; height:"+H+";visibility:inherit'><img src='"+S+"'></div>";
      this.innerHTML=MemVal}}
  if(ExpYes){this.onselectstart=CnclSlct;
    this.onmouseover=RcrsLvl==1&&UnfoldsOnClick?OpenMenuClick:OpenMenu;
    this.onmouseout=CloseMenu;
    this.onclick=RcrsLvl==1&&UnfoldsOnClick&&eval(WhatMenu+'[3]')?OpenMenu:GoTo  }
  else{  RcrsLvl==1&&UnfoldsOnClick?this.addEventListener('mouseover',OpenMenuClick,false):this.addEventListener('mouseover',OpenMenu,false);
    this.addEventListener('mouseout',CloseMenu,false);
    RcrsLvl==1&&UnfoldsOnClick&&eval(WhatMenu+'[3]')?this.addEventListener('click',OpenMenu,false):this.addEventListener('click',GoTo,false)}}

function NavMbrSetUp(MmbrCntnr,PrMmbr,WhatMenu,Wdth,Hght){
  var a,b,c,d;
  if(RcrsLvl==1){
    a=LowBgColor;
    b=HighBgColor;
    c=FontLowColor;
    d=FontHighColor}
  else {  a=LowSubBgColor;
    b=HighSubBgColor;
    c=FontSubLowColor;
    d=FontSubHighColor  }
  this.value=eval(WhatMenu+'[0]');
  this.ro=0;
  if(this.value.indexOf('rollover')!=-1){
    this.ro=1;
    this.ri1=this.value.substring(this.value.indexOf(':')+1,this.value.lastIndexOf(':'));
    this.ri2=this.value.substring(this.value.lastIndexOf(':')+1,this.value.length);
    this.rid=WhatMenu+'i';this.value="<img src='"+this.ri1+"' name='"+this.rid+"'>"}
  if(LeftPaddng&&this.value.indexOf('<')==-1&&MenuTextCentered=='left')this.value=' \;'+this.value;
  if(FontBold)this.value=this.value.bold();
  if(FontItalic)this.value=this.value.italics();
  this.Ovalue=this.value;
  this.value=this.value.fontcolor(c);
  this.Ovalue=this.Ovalue.fontcolor(d);
  this.value=CntrTxt+"<font face='"+FontFamily+"' point-size='"+FontSize+"'>"+this.value+TxtClose;
  this.Ovalue=CntrTxt+"<font face='"+FontFamily+"' point-size='"+FontSize+"'>"+this.Ovalue+TxtClose;
  this.LoBck=a;
  this.HiBck=b;
  this.ChildCntnr=null;
  this.PrvMbr=PrMmbr;
  this.Hilite=0;
  this.visibility='inherit';
  if(this.LoBck)this.bgColor=this.LoBck;
  this.resizeTo(Wdth,Hght);
  if(!AcrssFrms&&eval(WhatMenu+'[2]'))this.background.src=eval(WhatMenu+'[2]');
  this.document.write(this.value);
  this.document.close();
  this.CmdLyr=new Layer(Wdth,MmbrCntnr);
  this.CmdLyr.Level=RcrsLvl;
  this.CmdLyr.LinkTxt=eval(WhatMenu+'[1]');
  this.CmdLyr.visibility='inherit';
  this.CmdLyr.onmouseover=RcrsLvl==1&&UnfoldsOnClick?OpenMenuClick:OpenMenu;
  this.CmdLyr.onmouseout=CloseMenu;
  this.CmdLyr.captureEvents(Event.MOUSEUP);
  this.CmdLyr.onmouseup=RcrsLvl==1&&UnfoldsOnClick&&eval(WhatMenu+'[3]')?OpenMenu:GoTo;
  this.CmdLyr.LowLyr=this;
  this.CmdLyr.resizeTo(Wdth,Hght);
  this.CmdLyr.Container=MmbrCntnr;
  if(eval(WhatMenu+'[3]')&&ShowArrow){
    a=RcrsLvl==1&&FirstLineHorizontal?3:RightToLeft?6:0;
    this.CmdLyr.ImgLyr=new Layer(Arrws[a+1],this.CmdLyr);
    this.CmdLyr.ImgLyr.visibility='inherit';
    this.CmdLyr.ImgLyr.top=RcrsLvl==1&&FirstLineHorizontal?Hght-Arrws[a+2]-2:(Hght-Arrws[a+2])/2;
    this.CmdLyr.ImgLyr.left=RightToLeft?2:Wdth-Arrws[a+1]-2;
    this.CmdLyr.ImgLyr.width=Arrws[a+1];
    this.CmdLyr.ImgLyr.height=Arrws[a+2];
    ImgStr="<img src='"+Arrws[a]+"' width='"+Arrws[a+1]+"' height='"+Arrws[a+2]+"'>";
    this.CmdLyr.ImgLyr.document.write(ImgStr);
    this.CmdLyr.ImgLyr.document.close()}}

function CreateMenuStructure(MName,NumberOf){
  RcrsLvl++;
  var i,NoOffSubs,Mbr,Wdth=0,Hght=0;
  var PrvMmbr=null;
  var WMnu=MName+'1';
  var MenuWidth=eval(WMnu+'[5]');
  var MenuHeight=eval(WMnu+'[4]');
  var Location=RcrsLvl==1?FrstLoc:ScLoc;
  if (RcrsLvl==1&&FirstLineHorizontal){
    for(i=1;i<NumberOf+1;i++){
      WMnu=MName+eval(i);
      Wdth=eval(WMnu+'[5]')?Wdth+eval(WMnu+'[5]'):Wdth+MenuWidth}
    Wdth=BorderBtwnElmnts?Wdth+(NumberOf+1)*BorderWidth:Wdth+2*BorderWidth;Hght=MenuHeight+2*BorderWidth}
  else{  for(i=1;i<NumberOf+1;i++){
      WMnu=MName+eval(i);
      Hght=eval(WMnu+'[4]')?Hght+eval(WMnu+'[4]'):Hght+MenuHeight}
    Hght=BorderBtwnElmnts?Hght+(NumberOf+1)*BorderWidth:Hght+2*BorderWidth;Wdth=MenuWidth+2*BorderWidth}
  if(DomYes){
    var MmbrCntnr=Location.document.createElement("div");
    MmbrCntnr.style.position='absolute';
    MmbrCntnr.style.visibility='hidden';
    Location.document.body.appendChild(MmbrCntnr)}
  else{  if(Nav4) var MmbrCntnr=new Layer(Wdth,Location)
    else{  WMnu+='c';
      Location.document.body.insertAdjacentHTML("AfterBegin","<div id='"+WMnu+"' style='visibility:hidden; position:absolute;'><\/div>");
      var MmbrCntnr=Location.document.all[WMnu]}}
  MmbrCntnr.SetUp=CntnrSetUp;
  MmbrCntnr.SetUp(Wdth,Hght,NumberOf);
  if(Exp4){  MmbrCntnr.InnerString='';
    for(i=1;i<NumberOf+1;i++){
      WMnu=MName+eval(i);
      MmbrCntnr.InnerString+="<div id='"+WMnu+"' style='position:absolute;'><\/div>"}
    MmbrCntnr.innerHTML=MmbrCntnr.InnerString}
  for(i=1;i<NumberOf+1;i++){
    WMnu=MName+eval(i);
    NoOffSubs=eval(WMnu+'[3]');
    Wdth=RcrsLvl==1&&FirstLineHorizontal?eval(WMnu+'[5]')?eval(WMnu+'[5]'):MenuWidth:MenuWidth;
    Hght=RcrsLvl==1&&FirstLineHorizontal?MenuHeight:eval(WMnu+'[4]')?eval(WMnu+'[4]'):MenuHeight;
    if(DomYes){
      Mbr=Location.document.createElement("div");
      Mbr.style.position='absolute';
      Mbr.style.visibility='inherit';
      MmbrCntnr.appendChild(Mbr)}
    else Mbr=Nav4?new Layer(Wdth,MmbrCntnr):Location.document.all[WMnu];
    Mbr.SetUp=Nav4?NavMbrSetUp:MbrSetUp;
    Mbr.SetUp(MmbrCntnr,PrvMmbr,WMnu,Wdth,Hght);
    if(NoOffSubs) Mbr.ChildCntnr=CreateMenuStructure(WMnu+'_',NoOffSubs);
    PrvMmbr=Mbr}
  MmbrCntnr.FrstMbr=Mbr;
  RcrsLvl--;
  return(MmbrCntnr)}

function CreateMenuStructureAgain(MName,NumberOf){
  var i,WMnu,NoOffSubs,PrvMmbr,Mbr=FrstCntnr.FrstMbr;
  RcrsLvl++;
  for(i=NumberOf;i>0;i--){
    WMnu=MName+eval(i);
    NoOffSubs=eval(WMnu+'[3]');
    PrvMmbr=Mbr;
    if(NoOffSubs)Mbr.ChildCntnr=CreateMenuStructure(WMnu+'_',NoOffSubs);
    Mbr=Mbr.PrvMbr}
  RcrsLvl--}

function BeforeStart(){return}
function AfterBuild(){return}
function BeforeFirstOpen(){return}
function AfterCloseAll(){return}

</script>
<noscript>Your browser does not support script</noscript>

<!-- REST OF BODY CONTENT BELOW HERE -->

Instruction:

There are two ways to use this script.

First, download this JavaScript file and open in your editor, modify the code and upload to the same path of HTML file. Insert the following code to the page header tags, where you want to display the drop-down menu :

<script type="text/javascript" language="JavaScript" src="slidemenu_vertical.js">
</script>
<noscript>Your browser does not support script</noscript>

Second, copy the code bellow into HTML editor or note pad. Follow the instruction inside the script and make the change to match your website layout. Paste it into your web page where you want to display this menu.

Webmaster » Web Programming » DHTML » Vertical Slidedown Menu Code

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