var edit_mode = "3";
var treecolor = "FFFFFFFF";
var dirty = false;
var site_nav_index = {'d':[1],'a':[2],'cl':[2,3],'ad':[2,4],'ck':[2,5],'ae':[2,6],'ag':[2,7],'ab':[2,8],'af':[2,9],'aa':[2,10],'ac':[2,11],'ah':[2,12],'ai':[2,13],'aj':[2,14],'ak':[2,15],'al':[2,16],'c':[17],'ca':[17,18],'cb':[17,19],'cc':[17,20],'cd':[17,21],'cf':[17,22],'ch':[17,23],'ce':[17,24],'cg':[17,25],'ci':[17,26],'ba':[17,27]};
var nav_path = site_nav_index[page];

function process_nav()
{
	var nav = [['d','Home','Welcome to St Mary\'s Primary',1,1,'',''],['a','Information for Parents','St Mary\'s Primary School',2,1,'',''],[['cl','EAL','Mr Maberly',3,1,'',''],['ad','About Our School','ad',4,1,'',''],['ck','Music & Drama','Music & Drama',5,1,'',''],['ae','School Handbook','School Handbook',6,1,'',''],['ag','School News','School News',7,1,'',''],['ab','Staff','ab',8,1,'',''],['af','Nursery Class','Nursery Class',9,1,'',''],['aa','School Newsletter','aa',10,1,'',''],['ac','School Policies','School Policies',11,1,'',''],['ah','Eco-Committee','Eco-Committee',12,1,'',''],['ai','Complaints Procedure','Complaints Procedure',13,1,'',''],['aj','Pupil Council','Pupil Council',14,1,'',''],['ak','Health Group','Health Group',15,1,'',''],['al','PSADU','Preschool Assessment and Development Unit (PSADU)',16,1,'',''],],['c','Classes','Classes',17,1,'',''],[['ca','Primary 1','Mrs Crumlish & Primary 1',18,1,'',''],['cb','Primary 1/2','Mrs Coulthard and Primary 1/2',19,1,'',''],['cc','Primary 2/3','Mrs Goodall & Primary 2/3',20,1,'',''],['cd','Primary 3','Mrs McNeill and Primary 3',21,1,'',''],['cf','Primary 4','Miss McIntyre and Primary 4',22,1,'',''],['ch','Primary 4/5','Mrs Rennie & Primary 4/5',23,1,'',''],['ce','Primary 5','Miss Kerr & Primary 5',24,1,'',''],['cg','Primary 6a','Mrs Howie & Primary 6a',25,1,'',''],['ci','Primary 6b','Miss McNeilly',26,1,'',''],['ba','Useful Links','Useful Links',27,1,'',''],]];
	_process_nav(nav, 0, '');
}

function _process_nav(nav, level, state)
{
	nav_div = document.getElementById('navblock');
	navigation = write_nav(nav, level, state);
	if (nav_div.hasChildNodes())
	{
		nav_div.removeChild(nav_div.childNodes[0]);
	}
	nav_div.appendChild(navigation);
}


function write_nav(nav, level, state)
{
	var navigation = document.createElement("ul");
	if (nav == 'undefined')
	{
		alert('Deary me, this isn\'t right!');
	}
	if (state == '' && nav_path.length >= (level + 1)) {navigation.style.display = "block";}
	navigation.className ='uln';
	for (var x = 0; x < nav.length; x++)
	{
		var item = nav[x];
		if (item && typeof(item[0]) == 'string')
		{
			if (typeof(nav[x+1]) != 'undefined' && typeof(nav[x+1][0]) != 'string' && typeof(nav[x+1][0]) != 'undefined')
			{
				var citem = write_nav_item(item, level, 'nf', state);
				if (citem != null)
				{
					x++;
					item = nav[x];
					if (nav[x - 1] != 'undefined' && nav[x-1][3] == nav_path[level] && item[4] != 0)
					{
						var child_nav = write_nav(item, level + 1, '');
						citem.appendChild(child_nav);
					}
					else
					{
						if (item[4] != 0)						{
							citem.appendChild(write_nav(item, level + 1, '_x'));
						}
					}
					navigation.appendChild(citem);
				}
			}
			else
			{
				citem = write_nav_item(item, level, 'np', state);
				if (citem != null)
				{
					navigation.appendChild(citem);
				}
			}
		}
	}
	return navigation;
}

function write_nav_item(item, level, navtype, state)
{
	var on_style = "";
	var list_on_style = "";
	var mode = 3;
	
	if (item[1] == '')
	{
		item[1] = 'Untitled';
	}
	if (item[3] == nav_path[level])	{
		on_style = " " + navtype;
		on_style += item[3] == nav_path[level] ? '_on' : '';

		list_on_style = " l" + navtype;
		list_on_style += item[3] == nav_path[level] ? '_on' : '';
	}
	else	{
		list_on_style = " l" + navtype;
		list_on_style += '_off';
	}
	if (item[4] == 0 && mode == 3)
	{
		on_style = '_hidden';
		list_on_style = '_hidden';
	}

	if (item[4] == 0 && mode == 3)
	{
		return null;
	}

	var nav_item = document.createElement("li");
	nav_item.setAttribute('id', "_" + item);
	//nav_item.setAttribute('class', "l" + navtype + list_on_style);
	nav_item.className = "l" + navtype + list_on_style;
	//if (level > 0 || navtype == 'np') {nav_item.style.display = "none";}

	div1 = document.createElement("div");
	div1.className = "nbg";

	div2 = document.createElement("div");
	//div2.setAttribute('class', navtype + on_style);
	div2.className = navtype + on_style;

// create disclosure
	if (navtype == 'nf')
	{
		d_b = document.createElement("a");
		d_b.setAttribute('name', '');
		d_b.setAttribute('onclick', 'disclose(this);');
		d_b.className="d_i";	// disclosure icon

		d_a = document.createElement("img");
		d_a.setAttribute('src', 'http://www.take2theweb.com/images/FIG.GIF');
		d_a.setAttribute('onclick', 'disclose(event);');
		d_a.onclick = disclose;
		d_a.setAttribute('height', '16');
		d_a.setAttribute('width', '16');
		d_a.className = 'nfi';
		//d_b.appendChild(d_a);
		div2.appendChild(d_a);
	}
	
//
	
	d_a = document.createElement("a");
	d_a.className = 'n_l';		// navigation link
	if (item[6] != undefined && item[6] != '')	{
		d_a.setAttribute('href', item[6]);
		d_a.setAttribute('target', '_top');
	}
	else
	{
		d_a.setAttribute('href', item[0] + '.html');
	}
	d_a.setAttribute('title', item[2]);
	d_a.setAttribute('alt', "This is a disclosure item");
	if (item[5] != '') {d_a.setAttribute('accesskey', item[5]);}
	
	d_a_txt = document.createTextNode(item[1]);
	
	d_a.appendChild(d_a_txt);
	div2.appendChild(d_a);
	div1.appendChild(div2);
	nav_item.appendChild(div1);
	return nav_item;
}

function disclose(e)
{
	if (!e) var e = window.event;
	e = e.target || e.srcElement;
	p = e.parentNode.parentNode.parentNode.lastChild;
	var state = p.style.display;
	switch(state)
	{
		case '':
		case null:
		case 'none':
			p.style.display='block';
			{
				e.className ='nfi_on';
			}
			break;
		default:
			p.style.display='none';
			{
				e.className ='nfi';
			}
	}
}