function ddtabcontent(tabinterfaceid) {
    this.tabinterfaceid = tabinterfaceid
    this.tabs = document.getElementById(tabinterfaceid).getElementsByTagName("a")
    this.enabletabpersistence = true
    this.hottabspositions = []
    this.currentTabIndex = 0
    this.subcontentids = []
    this.revcontentids = []
    this.selectedClassTarget = "link"
}
ddtabcontent.getCookie = function(Name) {
    var re = new RegExp(Name + "=[^;]+", "i"); if (document.cookie.match(re))
        return document.cookie.match(re)[0].split("=")[1]
    return ""
}
ddtabcontent.setCookie = function(name, value) { document.cookie = name + "=" + value + ";path=/" }
ddtabcontent.prototype = { expandit: function(tabid_or_position) {
    this.cancelautorun()
    var tabref = ""
    try {
        if (typeof tabid_or_position == "string" && document.getElementById(tabid_or_position).getAttribute("rel"))
            tabref = document.getElementById(tabid_or_position)
        else if (parseInt(tabid_or_position) != NaN && this.tabs[tabid_or_position].getAttribute("rel"))
            tabref = this.tabs[tabid_or_position]
    }
    catch (err) { alert("Invalid Tab ID or position entered!") }
    if (tabref != "")
        this.expandtab(tabref)
}, cycleit: function(dir, autorun) {
    if (dir == "next") { var currentTabIndex = (this.currentTabIndex < this.hottabspositions.length - 1) ? this.currentTabIndex + 1 : 0 }
    else if (dir == "prev") { var currentTabIndex = (this.currentTabIndex > 0) ? this.currentTabIndex - 1 : this.hottabspositions.length - 1 }
    if (typeof autorun == "undefined")
        this.cancelautorun()
    this.expandtab(this.tabs[this.hottabspositions[currentTabIndex]])
}, setpersist: function(bool) { this.enabletabpersistence = bool }, setselectedClassTarget: function(objstr) { this.selectedClassTarget = objstr || "link" }, getselectedClassTarget: function(tabref) { return (this.selectedClassTarget == ("linkparent".toLowerCase())) ? tabref.parentNode : tabref }, urlparamselect: function(tabinterfaceid) {
    var result = window.location.search.match(new RegExp(tabinterfaceid + "=(\\d+)", "i"))
    return (result == null) ? null : parseInt(RegExp.$1)
}, expandtab: function(tabref) {
    var subcontentid = tabref.getAttribute("rel")
    var associatedrevids = (tabref.getAttribute("rev")) ? "," + tabref.getAttribute("rev").replace(/\s+/, "") + "," : ""
    this.expandsubcontent(subcontentid)
    this.expandrevcontent(associatedrevids)
    for (var i = 0; i < this.tabs.length; i++) { this.getselectedClassTarget(this.tabs[i]).className = (this.tabs[i].getAttribute("rel") == subcontentid) ? "selected" : "" }
    if (this.enabletabpersistence)
        ddtabcontent.setCookie(this.tabinterfaceid, tabref.tabposition)
    this.setcurrenttabindex(tabref.tabposition)
}, expandsubcontent: function(subcontentid) {
    for (var i = 0; i < this.subcontentids.length; i++) {
        var subcontent = document.getElementById(this.subcontentids[i])
        subcontent.style.display = (subcontent.id == subcontentid) ? "block" : "none"
    } 
}, expandrevcontent: function(associatedrevids) {
    var allrevids = this.revcontentids
    for (var i = 0; i < allrevids.length; i++) { document.getElementById(allrevids[i]).style.display = (associatedrevids.indexOf("," + allrevids[i] + ",") != -1) ? "block" : "none" } 
}, setcurrenttabindex: function(tabposition) {
    for (var i = 0; i < this.hottabspositions.length; i++) {
        if (tabposition == this.hottabspositions[i]) {
            this.currentTabIndex = i
            break
        } 
    } 
}, autorun: function() { this.cycleit('next', true) }, cancelautorun: function() {
    if (typeof this.autoruntimer != "undefined")
        clearInterval(this.autoruntimer)
}, init: function(automodeperiod) {
    var persistedtab = ddtabcontent.getCookie(this.tabinterfaceid)
    var selectedtab = -1
    var selectedtabfromurl = this.urlparamselect(this.tabinterfaceid)
    this.automodeperiod = automodeperiod || 0
    for (var i = 0; i < this.tabs.length; i++) {
        this.tabs[i].tabposition = i
        if (this.tabs[i].getAttribute("rel")) {
            var tabinstance = this
            this.hottabspositions[this.hottabspositions.length] = i
            this.subcontentids[this.subcontentids.length] = this.tabs[i].getAttribute("rel")
            this.tabs[i].onclick = function() {
                tabinstance.expandtab(this)
                tabinstance.cancelautorun()
                return false
            }
            if (this.tabs[i].getAttribute("rev")) { this.revcontentids = this.revcontentids.concat(this.tabs[i].getAttribute("rev").split(/\s*,\s*/)) }
            if (selectedtabfromurl == i || this.enabletabpersistence && selectedtab == -1 && parseInt(persistedtab) == i || !this.enabletabpersistence && selectedtab == -1 && this.getselectedClassTarget(this.tabs[i]).className == "selected") { selectedtab = i } 
        } 
    }
    if (selectedtab != -1)
        this.expandtab(this.tabs[selectedtab])
    else
        this.expandtab(this.tabs[this.hottabspositions[0]])
    if (parseInt(this.automodeperiod) > 500 && this.hottabspositions.length > 1) { this.autoruntimer = setInterval(function() { tabinstance.autorun() }, this.automodeperiod) } 
} 
}