//** Tab Content script v2.0- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
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 //if no valid default selected index found
this.expandtab(this.tabs[this.hottabspositions[0]]) 
if (parseInt(this.automodeperiod)>500 && this.hottabspositions.length>1){
this.autoruntimer=setInterval(function(){tabinstance.autorun()}, this.automodeperiod)
}
} 

}