function ddtabcontent(tabinterfaceid){
				this.tabinterfaceid=tabinterfaceid //ID of Tab Menu main container
				this.tabs=document.getElementById(tabinterfaceid).getElementsByTagName("a") //Get all tab links within container
				this.enabletabpersistence=true
				this.hottabspositions=[] //Array to store position of tabs that have a "rel" attr defined, relative to all tab links, within container
				this.currentTabIndex=0 //Index of currently selected hot tab (tab with sub content) within hottabspositions[] array
				this.subcontentids=[] //Array to store ids of the sub contents ("rel" attr values)
				this.revcontentids=[] //Array to store ids of arbitrary contents to expand/contact as well ("rev" attr values)
				this.selectedClassTarget="link" //keyword to indicate which target element to assign "selected" CSS class ("linkparent" or "link")
			}

			ddtabcontent.getCookie=function(Name){ 
				var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
				if (document.cookie.match(re)) //if cookie found
					return document.cookie.match(re)[0].split("=")[1] //return its value
				return ""
			}

			ddtabcontent.setCookie=function(name, value){
				document.cookie = name+"="+value+";path=/" //cookie value is domain wide (path=/)
			}

			ddtabcontent.prototype={

				expandit:function(tabid_or_position){ //PUBLIC function to select a tab either by its ID or position(int) within its peers
					this.cancelautorun() //stop auto cycling of tabs (if running)
					var tabref=""
					try{
						if (typeof tabid_or_position=="string" && document.getElementById(tabid_or_position).getAttribute("rel")) //if specified tab contains "rel" attr
							tabref=document.getElementById(tabid_or_position)
						else if (parseInt(tabid_or_position)!=NaN && this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab contains "rel" attr
							tabref=this.tabs[tabid_or_position]
					}
					catch(err){alert("Invalid Tab ID or position entered!")}
					if (tabref!="") //if a valid tab is found based on function parameter
						this.expandtab(tabref) //expand this tab
				},

				cycleit:function(dir, autorun){ //PUBLIC function to move foward or backwards through each hot tab (tabinstance.cycleit('foward/back') )
					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") //if cycleit() is being called by user, versus autorun() function
						this.cancelautorun() //stop auto cycling of tabs (if running)
					this.expandtab(this.tabs[this.hottabspositions[currentTabIndex]])
				},

				setpersist:function(bool){ //PUBLIC function to toggle persistence feature
						this.enabletabpersistence=bool
				},

				setselectedClassTarget:function(objstr){ //PUBLIC function to set which target element to assign "selected" CSS class ("linkparent" or "link")
					this.selectedClassTarget=objstr || "link"
				},

				getselectedClassTarget:function(tabref){ //Returns target element to assign "selected" CSS class to
					return (this.selectedClassTarget==("linkparent".toLowerCase()))? tabref.parentNode : tabref
				},

				urlparamselect:function(tabinterfaceid){
					var result=window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i")) //check for "?tabinterfaceid=2" in URL
					return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
				},

				expandtab:function(tabref){
					var subcontentid=tabref.getAttribute("rel") //Get id of subcontent to expand
					//Get "rev" attr as a string of IDs in the format ",john,george,trey,etc," to easily search through
					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++){ //Loop through all tabs, and assign only the selected tab the CSS class "selected"
						this.getselectedClassTarget(this.tabs[i]).className=(this.tabs[i].getAttribute("rel")==subcontentid)? "selected" : ""
					}
					if (this.enabletabpersistence) //if persistence enabled, save selected tab position(int) relative to its peers
						ddtabcontent.setCookie(this.tabinterfaceid, tabref.tabposition)
					this.setcurrenttabindex(tabref.tabposition) //remember position of selected tab within hottabspositions[] array
				},

				expandsubcontent:function(subcontentid){
					for (var i=0; i<this.subcontentids.length; i++){
						var subcontent=document.getElementById(this.subcontentids[i]) //cache current subcontent obj (in for loop)
						subcontent.style.display=(subcontent.id==subcontentid)? "block" : "none" //"show" or hide sub content based on matching id attr value
					}
				},

				expandrevcontent:function(associatedrevids){
					var allrevids=this.revcontentids
					for (var i=0; i<allrevids.length; i++){ //Loop through rev attributes for all tabs in this tab interface
						//if any values stored within associatedrevids matches one within allrevids, expand that DIV, otherwise, contract it
						document.getElementById(allrevids[i]).style.display=(associatedrevids.indexOf(","+allrevids[i]+",")!=-1)? "block" : "none"
					}
				},

				setcurrenttabindex:function(tabposition){ //store current position of tab (within hottabspositions[] array)
					for (var i=0; i<this.hottabspositions.length; i++){
						if (tabposition==this.hottabspositions[i]){
							this.currentTabIndex=i
							break
						}
					}
				},

				autorun:function(){ //function to auto cycle through and select tabs based on a set interval
					this.cycleit('next', true)
				},

				cancelautorun:function(){
					if (typeof this.autoruntimer!="undefined")
						clearInterval(this.autoruntimer)
				},

				init:function(automodeperiod){
					var persistedtab=ddtabcontent.getCookie(this.tabinterfaceid) //get position of persisted tab (applicable if persistence is enabled)
					var selectedtab=1 //Currently selected tab index (Sept 08 2008 - changed value to 1, originaly is -1 (-1 meaning none)) 
					var selectedtabfromurl=this.urlparamselect(this.tabinterfaceid) //returns null or index from: tabcontent.htm?tabinterfaceid=index
					this.automodeperiod=automodeperiod || 0
					for (var i=0; i<this.tabs.length; i++){
						this.tabs[i].tabposition=i //remember position of tab relative to its peers
						if (this.tabs[i].getAttribute("rel")){
							var tabinstance=this
							this.hottabspositions[this.hottabspositions.length]=i //store position of "hot" tab ("rel" attr defined) relative to its peers
							this.subcontentids[this.subcontentids.length]=this.tabs[i].getAttribute("rel") //store id of sub content ("rel" attr value)
							this.tabs[i].onclick=function(){
								tabinstance.expandtab(this)
								tabinstance.cancelautorun() //stop auto cycling of tabs (if running)
								return false
							}
							if (this.tabs[i].getAttribute("rev")){ //if "rev" attr defined, store each value within "rev" as an array element
								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 //Selected tab index, if found
							}
						}
					} //END for loop
					if (selectedtab!=-1) //if a valid default selected tab index is found
						this.expandtab(this.tabs[selectedtab]) //expand selected tab (either from URL parameter, persistent feature, or class="selected" class)
					else //if no valid default selected index found
						this.expandtab(this.tabs[this.hottabspositions[0]]) //Just select first tab that contains a "rel" attr
					if (parseInt(this.automodeperiod)>500 && this.hottabspositions.length>1){
						this.autoruntimer=setInterval(function(){tabinstance.autorun()}, this.automodeperiod)
					}
				} //END int() function

			} //END Prototype assignment