/* 
 * domTab.js 
 * version 2.2
 * written by Chris Heilmann
 * more info: http://www.onlinetools.org/tools/domtab.php
*/

// Global variables
var currentTab,currentLink;

// Change if you want to use another class for highlighting
var tabHighlightClass='current'; 

function initTabs()
{

// change if you have another main navigation ids for tabbed or normal element id
var navElement='mainnav';
var navElementTabbedId='mainnavtabbed';

// pattern to check against to identify "back to menu" links
	var backToMenu=/#top/;

	var n,as,id,i,cid,linklength,lastlink,re;
	if(document.getElementById && document.createTextNode)
	{
		cid=window.location.toString().match(/#(\w.+)/);
		if (cid && cid[1])
		{
			cid=cid[1];			
		}
		
		
			var n=document.getElementById(navElement);
			n.id=navElementTabbedId;
			n=document.getElementById(navElementTabbedId)
			var as=n.getElementsByTagName('a');
			for (i=0;i<as.length;i++)
			{
				as[i].onclick=function(){showTab(this);return false}
				//as[i].onkeypress=function(){showTab(this);return false}
				id=as[i].href.match(/#(\w.+)/)[1];				
				if(!cid && i==0)
				{
					currentTab=id;
					currentLink=as[i];
				} else if(id==cid)
				{
					currentTab=id;
					currentLink=as[i];
				}
				if(document.getElementById(id))
				{
					linklength=document.getElementById(id).getElementsByTagName('a').length;
					if(linklength>0)
					{
						lastlink=document.getElementById(id).getElementsByTagName('a')[linklength-1]
						if(backToMenu.test(lastlink.href))
						{
							lastlink.parentNode.removeChild(lastlink);
						}
					}
					document.getElementById(id).style.display='none';
				}
				//if(cid){window.location.hash='top';}
			}		


			if(document.getElementById(currentTab))
			{
				document.getElementById(currentTab).style.display='block';
			}
			re=new RegExp('\\b'+tabHighlightClass+'\\b');
			if(!re.test(currentLink.className))
			{
				//currentLink.className=currentLink.className+' '+tabHighlightClass;
				currentLink.parentNode.className=currentLink.className+' '+tabHighlightClass;
			}
			
		}
	
} 

function showTab(o)
{
	var id;
	if(currentTab)
	{
		if(document.getElementById(currentTab))
		{
			document.getElementById(currentTab).style.display='none';
		}
		//currentLink.className=currentLink.className.replace(tabHighlightClass,'')
		currentLink.parentNode.className=currentLink.parentNode.className.replace(tabHighlightClass,'');
	}
	id=o.href.match(/#(\w.+)/)[1];
	currentTab=id;
	currentLink=o;
	if(document.getElementById(id))
	{
		document.getElementById(id).style.display='block';
	}
	var re=new RegExp('\\b'+tabHighlightClass+'\\b');
	if(!re.test(o.className))
	{
		//o.className=o.className+' '+tabHighlightClass
		o.parentNode.className=o.parentNode.className+' '+tabHighlightClass;
	}
}

/*************************************/


function showTabByBtn(current, id)
{

	var aid;
	var as;
	var n;

	// change if you have another main navigation ids for tabbed or normal element id
	navElement='mainnav';
	navElementTabbedId='mainnavtabbed';	

	if(document.getElementById(current))
	{
		document.getElementById(current).style.display='none';
	}
	
	if(document.getElementById(id))
	{
		document.getElementById(id).style.display='block';
		currentTab = id;
	}	


	n = document.getElementById(navElementTabbedId);
	as = n.getElementsByTagName('a');
		
	for (i=0;i<as.length;i++)	
	{
	
		aid = as[i].href.match(/#(\w.+)/)[1];
			
		if (aid == current) {
			as[i].parentNode.className='';
		} 
		
		if (aid == id) {
			as[i].parentNode.className=as[i].parentNode.className+' '+tabHighlightClass;
			currentLink = as[i];
		}
		
		window.scroll(0,130);

			
	}
	
/*	
	var re=new RegExp('\\b'+tabHighlightClass+'\\b');
	if(!re.test(aid.className))
	{
		//o.className=o.className+' '+tabHighlightClass
		aid.parentNode.className=o.parentNode.className+' '+tabHighlightClass;
	}
*/

}


// If you need to call other scripts onload, change this call
window.onload=initTabs;