ÿþ//*** This library is copyright 2004 by Gavin Kistner, gavin@refinery.com

//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt

//*** Reuse or modification is free provided you abide by the terms of that license.

//*** (Including the first two lines above in your source code mostly satisfies the conditions.)



//*** Tabtastic -- see http://phrogz.net/JS/Tabstatic/index.html

//*** Version 1.0    20040430   Initial release.

//***         1.0.2  20040501   IE5Mac, IE6Win compat.

//***         1.0.3  20040501   Removed IE5Mac/Opera7 compat. (see http://phrogz.net/JS/Tabstatic/index.html#notes)

//***         1.0.4  20040521   Added scroll-back hack to prevent scrolling down to page anchor. Then commented out :)



AttachEvent(window,'load',function(){

	var tocTag='ul',tocClass='tabset_tabs',tabTag='a',contentClass='tabset_content';





	function FindEl(tagName,evt){

		if (!evt && window.event) evt=event;

		if (!evt) return DebugOut("Can't find an event to handle in DLTabSet::SetTab",0);

		var el=evt.currentTarget || evt.srcElement;

		while (el && (!el.tagName || el.tagName.toLowerCase()!=tagName)) el=el.parentNode;

		return el;

	}



	function SetTabActive(tab){

		if (tab.tabTOC.activeTab){

			if (tab.tabTOC.activeTab==tab) return;

			KillClass(tab.tabTOC.activeTab,'active');

			if (tab.tabTOC.activeTab.tabContent) KillClass(tab.tabTOC.activeTab.tabContent,'tabset_content_active');

			//if (tab.tabTOC.activeTab.tabContent) tab.tabTOC.activeTab.tabContent.style.display='';

			if (tab.tabTOC.activeTab.prevTab) KillClass(tab.tabTOC.activeTab.previousTab,'preActive');

			if (tab.tabTOC.activeTab.nextTab) KillClass(tab.tabTOC.activeTab.nextTab,'postActive');

		}

		AddClass(tab.tabTOC.activeTab=tab,'active');

		if (tab.tabContent) AddClass(tab.tabContent,'tabset_content_active');				

		//if (tab.tabContent) tab.tabContent.style.display='block';

		if (tab.prevTab) AddClass(tab.prevTab,'preActive');

		if (tab.nextTab) AddClass(tab.nextTab,'postActive');

	}

	function SetTabFromAnchor(evt){

		//setTimeout('document.body.scrollTop='+document.body.scrollTop,1);

		SetTabActive(FindEl('a',evt).semanticTab);

	}



	

	function Init(){

		window.everyTabThereIsById = {};

		

		var anchorMatch = /#([a-z][\w.:-]*)$/i,match;

		var activeTabs = [];

		

		var tocs = document.getElementsByTagName(tocTag);

		for (var i=0,len=tocs.length;i<len;i++){

			var toc = tocs[i];

			if (!HasClass(toc,tocClass)) continue;



			var lastTab;

			var tabs = toc.getElementsByTagName(tabTag);

			for (var j=0,len2=tabs.length;j<len2;j++){

				var tab = tabs[j];

				if (!tab.href || !(match=anchorMatch.exec(tab.href))) continue;

				if (lastTab){

					tab.prevTab=lastTab;

					lastTab.nextTab=tab;

				}

				tab.tabTOC=toc;

				everyTabThereIsById[tab.tabID=match[1]]=tab;

				tab.tabContent = document.getElementById(tab.tabID);

				

				if (HasClass(tab,'active')) activeTabs[activeTabs.length]=tab;

				

				lastTab=tab;

			}

			AddClass(toc.getElementsByTagName('li')[0],'firstchild');

		}



		for (var i=0,len=activeTabs.length;i<len;i++){

			SetTabActive(activeTabs[i]);

		}



		for (var i=0,len=document.links.length;i<len;i++){

			var a = document.links[i];

			if (!(match=anchorMatch.exec(a.href))) continue;

			if (a.semanticTab = everyTabThereIsById[match[1]]) AttachEvent(a,'click',SetTabFromAnchor,false);

		}

		

		if ((match=anchorMatch.exec(location.href)) && (a=everyTabThereIsById[match[1]])) SetTabActive(a);

		

		//Comment out the next line and include the file directly if you need IE5Mac or Opera7 support.

		AddStyleSheet('tabtastic.css',0);

	}

	Init();

},false);