//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(/^\//, "")
    var menuurl = menuurl.substring(menuurl.lastIndexOf("/") + 1);

    var currentpageurl = tabdropdown.currentpageurl.substring(tabdropdown.currentpageurl.lastIndexOf("/") + 1);
    //alert("menuurl: \n" + menuurl + "\ntabdropdown.currentpageurl: " + currentpageurl);
    //return (tabdropdown.currentpageurl == menuurl)
    return ((menuurl.indexOf(currentpageurl) != -1) ||
            ((menuurl == "ChiSiamo.aspx") && (currentpageurl == "Mission.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "AnalisiSviluppo.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "SitiWeb.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "ElaborazioneDati.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "HardwareReti.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "HostingHousing.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "Teleassistenza.aspx")) ||
            ((menuurl == "Consulenza.aspx") && (currentpageurl == "Videosorveglianza.aspx")) 
            
           )

  },

  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"
    }
  }

}