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|
//** All Levels Navigational Menu- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/
//** Usage Terms: http://www.dynamicdrive.com/notice.htm
//** Current version: 3.0 See changelog.txt for details
if (typeof dd_domreadycheck=="undefined") //global variable to detect if DOM is ready
var dd_domreadycheck=false
var ddlevelsmenu={
enableshim: true, //enable IFRAME shim to prevent drop down menus from being hidden below SELECT or FLASH elements? (tip: disable if not in use, for efficiency)
arrowpointers:{
downarrow: ["/css/menu/mimp.png", 11,7], //[path_to_down_arrow, arrowwidth, arrowheight]
rightarrow: ["/css/menu/mimp.png", 12,12], //[path_to_right_arrow, arrowwidth, arrowheight]
showarrow: {toplevel: true, sublevel: true} //Show arrow images on top level items and sub level items, respectively?
},
hideinterval: 200, //delay in milliseconds before entire menu disappears onmouseout.
effects: {enableswipe: true, enableslide: true, enablefade: true, duration: 200},
httpsiframesrc: "blank.htm", //If menu is run on a secure (https) page, the IFRAME shim feature used by the script should point to an *blank* page *within* the secure area to prevent an IE security prompt. Specify full URL to that page on your server (leave as is if not applicable).
///No need to edit beyond here////////////////////
topmenuids: [], //array containing ids of all the primary menus on the page
topitems: {}, //object array containing all top menu item links
subuls: {}, //object array containing all ULs
lastactivesubul: {}, //object object containing info for last mouse out menu item's UL
topitemsindex: -1,
ulindex: -1,
hidetimers: {}, //object array timer
shimadded: false,
nonFF: !/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent), //detect non FF browsers
getoffset:function(what, offsettype){
return (what.offsetParent)? what[offsettype]+this.getoffset(what.offsetParent, offsettype) : what[offsettype]
},
getoffsetof:function(el){
el._offsets={left:this.getoffset(el, "offsetLeft"), top:this.getoffset(el, "offsetTop")}
},
getwindowsize:function(){
this.docwidth=window.innerWidth? window.innerWidth-10 : this.standardbody.clientWidth-10
this.docheight=window.innerHeight? window.innerHeight-15 : this.standardbody.clientHeight-18
},
gettopitemsdimensions:function(){
for (var m=0; m<this.topmenuids.length; m++){
var topmenuid=this.topmenuids[m]
for (var i=0; i<this.topitems[topmenuid].length; i++){
var header=this.topitems[topmenuid][i]
var submenu=document.getElementById(header.getAttribute('rel'))
header._dimensions={w:header.offsetWidth, h:header.offsetHeight, submenuw:submenu.offsetWidth, submenuh:submenu.offsetHeight}
}
}
},
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
},
addpointer:function(target, imgclass, imginfo, BeforeorAfter){
var pointer=document.createElement("img")
pointer.src=imginfo[0]
pointer.style.width=imginfo[1]+"px"
pointer.style.height=imginfo[2]+"px"
if(imgclass=="rightarrowpointer"){
pointer.style.left=target.offsetWidth-imginfo[2]-2+"px"
}
pointer.className=imgclass
var target_firstEl=target.childNodes[target.firstChild.nodeType!=1? 1 : 0] //see if the first child element within A is a SPAN (found in sliding doors technique)
if (target_firstEl && target_firstEl.tagName=="SPAN"){
target=target_firstEl //arrow should be added inside this SPAN instead if found
}
if (BeforeorAfter=="before")
target.insertBefore(pointer, target.firstChild)
else
target.appendChild(pointer)
},
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
},
addshimmy:function(target){
var shim=(!window.opera)? document.createElement("iframe") : document.createElement("div") //Opera 9.24 doesnt seem to support transparent IFRAMEs
shim.className="ddiframeshim"
shim.setAttribute("src", location.protocol=="https:"? this.httpsiframesrc : "about:blank")
shim.setAttribute("frameborder", "0")
target.appendChild(shim)
try{
shim.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)'
}
catch(e){}
return shim
},
positionshim:function(header, submenu, dir, scrollX, scrollY){
if (header._istoplevel){
var scrollY=window.pageYOffset? window.pageYOffset : this.standardbody.scrollTop
var topgap=header._offsets.top-scrollY
var bottomgap=scrollY+this.docheight-header._offsets.top-header._dimensions.h
if (topgap>0){
this.shimmy.topshim.style.left=scrollX+"px"
this.shimmy.topshim.style.top=scrollY+"px"
this.shimmy.topshim.style.width="99%"
this.shimmy.topshim.style.height=topgap+"px" //distance from top window edge to top of menu item
}
if (bottomgap>0){
this.shimmy.bottomshim.style.left=scrollX+"px"
this.shimmy.bottomshim.style.top=header._offsets.top + header._dimensions.h +"px"
this.shimmy.bottomshim.style.width="99%"
this.shimmy.bottomshim.style.height=bottomgap+"px" //distance from bottom of menu item to bottom window edge
}
}
},
hideshim:function(){
this.shimmy.topshim.style.width=this.shimmy.bottomshim.style.width=0
this.shimmy.topshim.style.height=this.shimmy.bottomshim.style.height=0
},
buildmenu:function(mainmenuid, header, submenu, submenupos, istoplevel, dir){
header._master=mainmenuid //Indicate which top menu this header is associated with
header._pos=submenupos //Indicate pos of sub menu this header is associated with
header._istoplevel=istoplevel
if (istoplevel){
this.addEvent(header, function(e){
ddlevelsmenu.hidemenu(ddlevelsmenu.subuls[this._master][parseInt(this._pos)])
}, "click")
}
this.subuls[mainmenuid][submenupos]=submenu
header._dimensions={w:header.offsetWidth, h:header.offsetHeight, submenuw:submenu.offsetWidth, submenuh:submenu.offsetHeight}
this.getoffsetof(header)
submenu.parentNode.style.left=0
submenu.parentNode.style.top=0
submenu.parentNode.style.visibility="hidden"
submenu.style.visibility="hidden"
this.addEvent(header, function(e){ //mouseover event
if (!ddlevelsmenu.isContained(this, e)){
var submenu=ddlevelsmenu.subuls[this._master][parseInt(this._pos)]
if (this._istoplevel){
ddlevelsmenu.css(this, "selected", "add")
clearTimeout(ddlevelsmenu.hidetimers[this._master][this._pos])
}
ddlevelsmenu.getoffsetof(header)
var scrollX=window.pageXOffset? window.pageXOffset : ddlevelsmenu.standardbody.scrollLeft
var scrollY=window.pageYOffset? window.pageYOffset : ddlevelsmenu.standardbody.scrollTop
var submenurightedge=this._offsets.left + this._dimensions.submenuw + (this._istoplevel && dir=="topbar"? 0 : this._dimensions.w)
var submenubottomedge=this._offsets.top + this._dimensions.submenuh
//Sub menu starting left position
var menuleft=(this._istoplevel? this._offsets.left + (dir=="sidebar"? this._dimensions.w : 0) : this._dimensions.w)
if (submenurightedge-scrollX>ddlevelsmenu.docwidth){
menuleft+= -this._dimensions.submenuw + (this._istoplevel && dir=="topbar" ? this._dimensions.w : -this._dimensions.w)
}
submenu.parentNode.style.left=menuleft+"px"
//Sub menu starting top position
var menutop=(this._istoplevel? this._offsets.top + (dir=="sidebar"? 0 : this._dimensions.h) : this.offsetTop)
if (submenubottomedge-scrollY>ddlevelsmenu.docheight){ //no room downwards?
if (this._dimensions.submenuh<this._offsets.top+(dir=="sidebar"? this._dimensions.h : 0)-scrollY){ //move up?
menutop+= - this._dimensions.submenuh + (this._istoplevel && dir=="topbar"? -this._dimensions.h : this._dimensions.h)
}
else{ //top of window edge
menutop+= -(this._offsets.top-scrollY) + (this._istoplevel && dir=="topbar"? -this._dimensions.h : 0)
}
}
submenu.parentNode.style.top=menutop+"px"
if (ddlevelsmenu.enableshim && (ddlevelsmenu.effects.enableswipe==false || ddlevelsmenu.nonFF)){ //apply shim immediately only if animation is turned off, or if on, in non FF2.x browsers
ddlevelsmenu.positionshim(header, submenu, dir, scrollX, scrollY)
}
else{
submenu.FFscrollInfo={x:scrollX, y:scrollY}
}
ddlevelsmenu.showmenu(header, submenu, dir)
}
}, "mouseover")
this.addEvent(header, function(e){ //mouseout event
var submenu=ddlevelsmenu.subuls[this._master][parseInt(this._pos)]
if (this._istoplevel){
if (!ddlevelsmenu.isContained(this, e) && !ddlevelsmenu.isContained(submenu.parentNode, e)) //hide drop down div if mouse moves out of menu bar item but not into drop down div itself
ddlevelsmenu.hidemenu(submenu.parentNode)
}
else if (!this._istoplevel && !ddlevelsmenu.isContained(this, e)){
ddlevelsmenu.hidemenu(submenu.parentNode)
}
}, "mouseout")
},
setopacity:function(el, value){
el.style.opacity=value
if (typeof el.style.opacity!="string"){ //if it's not a string (ie: number instead), it means property not supported
el.style.MozOpacity=value
try{
if (el.filters){
el.style.filter="progid:DXImageTransform.Microsoft.alpha(opacity="+ value*100 +")"
}
} catch(e){}
}
},
showmenu:function(header, submenu, dir){
if (this.effects.enableswipe || this.effects.enablefade){
if (this.effects.enableswipe){
var endpoint=(header._istoplevel && dir=="topbar")? header._dimensions.submenuh : header._dimensions.submenuw
submenu.parentNode.style.width=submenu.parentNode.style.height=0
submenu.parentNode.style.overflow="hidden"
}
if (this.effects.enablefade){
submenu.parentNode.style.width=submenu.offsetWidth+"px"
submenu.parentNode.style.height=submenu.offsetHeight+"px"
this.setopacity(submenu.parentNode, 0) //set opacity to 0 so menu appears hidden initially
}
submenu._curanimatedegree=0
submenu.parentNode.style.visibility="visible"
submenu.style.visibility="visible"
clearInterval(submenu._animatetimer)
submenu._starttime=new Date().getTime() //get time just before animation is run
submenu._animatetimer=setInterval(function(){ddlevelsmenu.revealmenu(header, submenu, endpoint, dir)}, 10)
}
else{
submenu.parentNode.style.visibility="visible"
submenu.style.visibility="visible"
}
},
revealmenu:function(header, submenu, endpoint, dir){
var elapsed=new Date().getTime()-submenu._starttime //get time animation has run
if (elapsed<this.effects.duration){
if (this.effects.enableswipe){
if (submenu._curanimatedegree==0){ //reset either width or height of sub menu to "auto" when animation begins
submenu.parentNode.style[header._istoplevel && dir=="topbar"? "width" : "height"]=(header._istoplevel && dir=="topbar"? submenu.offsetWidth : submenu.offsetHeight)+"px"
}
submenu.parentNode.style[header._istoplevel && dir=="topbar"? "height" : "width"]=(submenu._curanimatedegree*endpoint)+"px"
if (this.effects.enableslide){
submenu.style[header._istoplevel && dir=="topbar"? "top" : "left"]=Math.floor((submenu._curanimatedegree-1)*endpoint)+"px"
}
}
if (this.effects.enablefade){
this.setopacity(submenu.parentNode, submenu._curanimatedegree)
}
}
else{
clearInterval(submenu._animatetimer)
if (this.effects.enableswipe){
submenu.parentNode.style.width=submenu.offsetWidth+"px"
submenu.parentNode.style.height=submenu.offsetHeight+"px"
submenu.parentNode.style.overflow="visible"
if (this.effects.enableslide){
submenu.style.top=0;
submenu.style.left=0;
}
}
if (this.effects.enablefade){
this.setopacity(submenu.parentNode, 1)
submenu.parentNode.style.filter=""
}
if (this.enableshim && submenu.FFscrollInfo) //if this is FF browser (meaning shim hasn't been applied yet
this.positionshim(header, submenu, dir, submenu.FFscrollInfo.x, submenu.FFscrollInfo.y)
}
submenu._curanimatedegree=(1-Math.cos((elapsed/this.effects.duration)*Math.PI)) / 2
},
hidemenu:function(submenu){
if (typeof submenu._pos!="undefined"){ //if submenu is outermost DIV drop down menu
this.css(this.topitems[submenu._master][parseInt(submenu._pos)], "selected", "remove")
if (this.enableshim)
this.hideshim()
}
clearInterval(submenu.firstChild._animatetimer)
submenu.style.left=0
submenu.style.top="-1000px"
submenu.style.visibility="hidden"
submenu.firstChild.style.visibility="hidden"
},
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)});
},
domready:function(functionref){ //based on code from the jQuery library
if (dd_domreadycheck){
functionref()
return
}
// Mozilla, Opera and webkit nightlies currently support this event
if (document.addEventListener) {
// Use the handy event callback
document.addEventListener("DOMContentLoaded", function(){
document.removeEventListener("DOMContentLoaded", arguments.callee, false )
functionref();
dd_domreadycheck=true
}, false )
}
else if (document.attachEvent){
// If IE and not an iframe
// continually check to see if the document is ready
if ( document.documentElement.doScroll && window == window.top) (function(){
if (dd_domreadycheck){
functionref()
return
}
try{
// If IE is used, use the trick by Diego Perini
// http://javascript.nwbox.com/IEContentLoaded/
document.documentElement.doScroll("left")
}catch(error){
setTimeout( arguments.callee, 0)
return;
}
//and execute any waiting functions
functionref();
dd_domreadycheck=true
})();
}
if (document.attachEvent && parent.length>0) //account for page being in IFRAME, in which above doesn't fire in IE
this.addEvent(window, function(){functionref()}, "load");
},
init:function(mainmenuid, dir){
this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
this.topitemsindex=-1
this.ulindex=-1
this.topmenuids.push(mainmenuid)
this.topitems[mainmenuid]=[] //declare array on object
this.subuls[mainmenuid]=[] //declare array on object
this.hidetimers[mainmenuid]=[] //declare hide entire menu timer
if (this.enableshim && !this.shimadded){
this.shimmy={}
this.shimmy.topshim=this.addshimmy(document.body) //create top iframe shim obj
this.shimmy.bottomshim=this.addshimmy(document.body) //create bottom iframe shim obj
this.shimadded=true
}
var menubar=document.getElementById(mainmenuid)
var alllinks=menubar.getElementsByTagName("a")
this.getwindowsize()
for (var i=0; i<alllinks.length; i++){
if (alllinks[i].getAttribute('rel')){
this.topitemsindex++
this.ulindex++
var menuitem=alllinks[i]
this.topitems[mainmenuid][this.topitemsindex]=menuitem //store ref to main menu links
var dropul=document.getElementById(menuitem.getAttribute('rel'))
var shelldiv=document.createElement("div") // create DIV which will contain the UL
shelldiv.className="ddsubmenustyle"
dropul.removeAttribute("class")
shelldiv.appendChild(dropul)
document.body.appendChild(shelldiv) //move main DIVs to end of document
shelldiv.style.zIndex=2000 //give drop down menus a high z-index
shelldiv._master=mainmenuid //Indicate which main menu this main DIV is associated with
shelldiv._pos=this.topitemsindex //Indicate which main menu item this main DIV is associated with
this.addEvent(shelldiv, function(){ddlevelsmenu.hidemenu(this)}, "click")
var arrowclass=(dir=="sidebar")? "rightarrowpointer" : "downarrowpointer"
var arrowpointer=(dir=="sidebar")? this.arrowpointers.rightarrow : this.arrowpointers.downarrow
if (this.arrowpointers.showarrow.toplevel)
this.addpointer(menuitem, arrowclass, arrowpointer, (dir=="sidebar")? "before" : "after")
this.buildmenu(mainmenuid, menuitem, dropul, this.ulindex, true, dir) //build top level menu
shelldiv.onmouseover=function(){
clearTimeout(ddlevelsmenu.hidetimers[this._master][this._pos])
}
this.addEvent(shelldiv, function(e){ //hide menu if mouse moves out of main DIV element into open space
if (!ddlevelsmenu.isContained(this, e) && !ddlevelsmenu.isContained(ddlevelsmenu.topitems[this._master][parseInt(this._pos)], e)){
var dropul=this
if (ddlevelsmenu.enableshim)
ddlevelsmenu.hideshim()
ddlevelsmenu.hidetimers[this._master][this._pos]=setTimeout(function(){
ddlevelsmenu.hidemenu(dropul)
}, ddlevelsmenu.hideinterval)
}
}, "mouseout")
var subuls=dropul.getElementsByTagName("ul")
for (var c=0; c<subuls.length; c++){
this.ulindex++
var parentli=subuls[c].parentNode
var subshell=document.createElement("div")
subshell.appendChild(subuls[c])
parentli.appendChild(subshell)
if (this.arrowpointers.showarrow.sublevel)
this.addpointer(parentli.getElementsByTagName("a")[0], "rightarrowpointer", this.arrowpointers.rightarrow, "before")
this.buildmenu(mainmenuid, parentli, subuls[c], this.ulindex, false, dir) //build sub level menus
}
}
} //end for loop
this.addEvent(window, function(){ddlevelsmenu.getwindowsize(); ddlevelsmenu.gettopitemsdimensions()}, "resize")
},
setup:function(mainmenuid, dir){
this.domready(function(){ddlevelsmenu.init(mainmenuid, dir)})
}
} |
