/*****************************************/
/** Usable Forms 1.0, May 2003          **/
/** Written by ppk, www.quirksmode.org  **/
/** Instructions for use on my site     **/
/**                                     **/
/** You may use or change this script   **/
/** only when this copyright notice     **/
/** is intact.                          **/
/**                                     **/
/** If you extend the script, please    **/
/** add a short description and your    **/
/** name below.                         **/
/**
/** Changes by jason@jasonkhong.com:
    1. No need to document.write accessibility css class
    2. Made script work with labels
/*****************************************/

var relatedTag = 'TR';

var compatible = (
	document.getElementById && document.getElementsByTagName && document.createElement
	&&
	!(navigator.userAgent.indexOf('MSIE 5') != -1 && navigator.userAgent.indexOf('Mac') != -1)
	);

// if (compatible)
	// document.write('<style>.accessibility{display: none}</style>');


function prepareForm()
{
	if (!compatible) return;
	var marker = document.createElement(relatedTag);
	marker.style.display = 'none';

	var x = document.getElementsByTagName(relatedTag);
	var toBeRemoved = new Array;
	for (var i=0;i<x.length;i++)
	{
		if (x[i].getAttribute('relation'))
		{
			var y = getAllFormFields(x[i]);
			x[i].nestedRels = new Array;
			for (var j=0;j<y.length;j++)
			{
				var rel = y[j].getAttribute('show');
				if (!rel || rel == 'none') continue;
				x[i].nestedRels.push(rel);
			}
			if (!x[i].nestedRels.length) x[i].nestedRels = null;
			toBeRemoved.push(x[i]);
		}
	}

	while (toBeRemoved.length)
	{
		var rel = toBeRemoved[0].getAttribute('relation');
		if (!document.getElementById(rel))
		{
			var newMarker = marker.cloneNode(true);
			newMarker.id = rel;
			toBeRemoved[0].parentNode.replaceChild(newMarker,toBeRemoved[0]);
		}
		document.getElementById('waitingRoom').appendChild(toBeRemoved.shift());
	}
	document.onclick = arrangeFormFields;

	var y = document.getElementsByTagName('input');
	for (var i=0;i<y.length;i++)
	{
		if (y[i].checked && y[i].getAttribute('show'))
        {
			intoMainForm(y[i].getAttribute('show'))
        }
	}

	var z = document.getElementsByTagName('select');
	
	// Opera weird with hidden selects in quirks mode: selectedIndex = -1
	
	for (var i=0;i<z.length;i++)
	{
		if (z[i].options[z[i].selectedIndex].getAttribute('show'))
		{
			z[i].onchange = arrangeFormFields;
			intoMainForm(z[i].options[z[i].selectedIndex].getAttribute('show'))
		}
	}
}

function arrangeFormFields(e)
{
	if (!e) 
    {
        var e = window.event;
    }
	var tg = (e.target) ? e.target : e.srcElement;
	if (
		!(tg.nodeName == 'INPUT' && tg.getAttribute('show'))
        &&
        !(tg.nodeName == 'SELECT' && e.type == 'change')
        &&
        !(tg.nodeName == 'LABEL')
	   ) return;

   // Transfer to label field if this is a label
    if (tg.nodeName == 'LABEL')
    {
        var label_for = tg.getAttribute('FOR');
        if (label_for == null)
        {
            return;
        }
        tg = document.getElementById(label_for);
    }

    var toBeInserted = tg.getAttribute('show');

	/* Why no switch statement? Because Netscape 3 gives an error message on encountering it,
		and this script must degrade perfectly. */
	if (tg.type == 'checkbox')
	{
		if (tg.checked)
			intoMainForm(toBeInserted);
		else
			intoWaitingRoom(toBeInserted);
	}
	else if (tg.type == 'radio')
	{
		removeOthers(tg.form[tg.name],toBeInserted)
		intoMainForm(toBeInserted);
	}
	else if (tg.type == 'select-one')
	{
		toBeInserted = tg.options[tg.selectedIndex].getAttribute('show');
		removeOthers(tg.options,toBeInserted);
		intoMainForm(toBeInserted);
	}
}

function removeOthers(others,toBeInserted)
{
	var toBeRemoved = new Array;
	for (var i=0;i<others.length;i++)
	{
		var show = others[i].getAttribute('show');
		if (show != toBeInserted)
			toBeRemoved.push(show);
	}
	while (toBeRemoved.length)
		intoWaitingRoom(toBeRemoved.shift());
}

function gatherElements(name)
{
	var Elements = new Array;
	var x = document.getElementsByTagName(relatedTag);
	for (var i=0;i<x.length;i++)
		if (x[i].getAttribute('relation') == name)
			Elements.push(x[i]);
	return Elements;
}

function intoWaitingRoom(name)
{
	if (name == 'none') return;
	var Elements = gatherElements(name);
	if (isInWaitingRoom(Elements[0])) return;
	while (Elements.length)
	{
		if (Elements[0].nestedRels)
			for (var i=0;i<Elements[0].nestedRels.length;i++)
				intoWaitingRoom(Elements[0].nestedRels[i]);
		document.getElementById('waitingRoom').appendChild(Elements.shift())
	}
}

function intoMainForm(name)
{
	if (name == 'none') return;
	var Elements = gatherElements(name);
	if (!isInWaitingRoom(Elements[0])) return;
	var insertPoint = document.getElementById(name);
	while (Elements.length)
		insertPoint.parentNode.insertBefore(Elements.shift(),insertPoint)
}

function isInWaitingRoom(obj)
{
	while(obj.nodeName != 'BODY')
	{
		obj=obj.parentNode;
		if (obj.id == 'waitingRoom')
			return true;
	}
	return false;
}


function getAllFormFields(node)
{
	var allFormFields = new Array;
	var x = node.getElementsByTagName('input');
	for (var i=0;i<x.length;i++)
		allFormFields.push(x[i]);
	var y = node.getElementsByTagName('option');
	for (var i=0;i<y.length;i++)
		allFormFields.push(y[i]);
	return allFormFields;
}

// push and shift for IE5

function Array_push() {
	var A_p = 0
	for (A_p = 0; A_p < arguments.length; A_p++) {
		this[this.length] = arguments[A_p]
	}
	return this.length
}

if (typeof Array.prototype.push == "undefined") {
	Array.prototype.push = Array_push
}

function Array_shift() {
	var A_s = 0
	var response = this[0]
	for (A_s = 0; A_s < this.length-1; A_s++) {
		this[A_s] = this[A_s + 1]
	}
	this.length--
	return response
}

if (typeof Array.prototype.shift == "undefined") {
	Array.prototype.shift = Array_shift
}

/* Zebra Tables (greenbar stripping) 
   Original idea: A List Apart.
*/  
// this function is needed to work around 
// a bug in IE related to element attributes
function hasClass(obj) {
    var result = false;
    if (obj.getAttributeNode("class") != null) {
        result = obj.getAttributeNode("class").value;
    }
    return result;
}   

function stripe(id) {
    var table = document.getElementById(id);
    if (! table) {return; }
    
    stripeTable(table);
}

function stripeTable(table) {
    if (! table) {return; }
    
    var tbds = table.getElementsByTagName("tbody");
    
    for (var i = 0; i < tbds.length; i++) {
        var trs = tbds[i].getElementsByTagName("tr");
        
        for (var j = 0; j < trs.length; j++) {
            trs[j].className = trs[j].className.replace(' even',"");
            trs[j].className = trs[j].className.replace(' odd',"");
            if (j%2) {
                trs[j].className += " even";
            } else {
                trs[j].className += " odd";
            }
        }
    }
}

function stripeAll() {
    var tables = document.getElementsByTagName('table');
    
    for (x=0;x!=tables.length;x++)
    {
        table = tables[x];
        if (!table) { return; }
        
        var tableClasses = hasClass(table);
        if (
            tableClasses.indexOf('list') >= 0 || 
            tableClasses.indexOf('keydata') >= 0  
            )
        {
            stripeTable(table);
        }
    }
}

/* Sortable
   Source: http://www.kryogenix.org/code/browser/sorttable/
   
   Changes:
   1. Sort only tBodies[0].rows
      !!! Will no longer sort past the first tbody!!!
   2. Use tHead.rows[0] as header
   3. Remove href in header <a>
   4. Do not sort-ify column is header <td> is empty
   
   TODO
   DONE. = Make entire <td> clickable for sorting
   DONE. = deprecate sortables_init() and ts_makeSortable; move clickable headers into .adp?
   + Add group sorting support (maybe rowgroup, maybe tbodies)
   + Check why sorting can mis-sort.
   DONE. + Make sortable compatible with List Builder sorting -- use href for non-DOM browsers.
   + Allow ts_resortTable to be called from Filter.
*/

//addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;

/* sortables_init() and ts_makeSortable(table) have been deprecated.
   Please initialize the tables in the template::list::create -orderby
   
function sortables_init() {
    // Find all tables with class sortable and make them sortable
    if (!document.getElementsByTagName) return;
    tbls = document.getElementsByTagName("table");
    for (ti=0;ti<tbls.length;ti++) {
        thisTbl = tbls[ti];
        if (((' '+thisTbl.className+' ').indexOf("sortable") != -1) && (thisTbl.id)) {
            //initTable(thisTbl.id);
            ts_makeSortable(thisTbl);
        }
    }
}

function ts_makeSortable(table) {
    if (table.rows && table.rows.length > 0) {
        var firstRow = table.tHead.rows[0];
    }
    if (!firstRow) return;
    
    // We have a first row: assume it's the header, and make its contents clickable links
    for (var i=0;i<firstRow.cells.length;i++) {
        var cell = firstRow.cells[i];
        var txt = ts_getInnerText(cell);
        if (txt.length > 0) {
            cell.innerHTML = '<a class="sortheader" onclick="ts_resortTable(this);return true;">'+txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
        }
    }
}

function addEvent(elm, evType, fn, useCapture)
// addEvent and removeEvent
// cross-browser event handling for IE5+,  NS6 and Mozilla
// By Scott Andrew
{
  if (elm.addEventListener){
    elm.addEventListener(evType, fn, useCapture);
    return true;
  } else if (elm.attachEvent){
    var r = elm.attachEvent("on"+evType, fn);
    return r;
  } else {
    alert("Handler could not be removed");
  }
} 
*/

function ts_getInnerText(el) {
	if (typeof el == "string") return el;
	if (typeof el == "undefined") { return el };
	if (el.innerText) return el.innerText;	//Not needed but it is faster
	var str = "";
	
	var cs = el.childNodes;
	var l = cs.length;
	for (var i = 0; i < l; i++) {
		switch (cs[i].nodeType) {
			case 1: //ELEMENT_NODE
				str += ts_getInnerText(cs[i]);
				break;
			case 3:	//TEXT_NODE
				str += cs[i].nodeValue;
				break;
		}
	}
	return str;
}

function ts_resortTable(lnk) {
    // get the span
    var span;
    for (var ci=0;ci<lnk.childNodes.length;ci++) {
        if (lnk.childNodes[ci].tagName && lnk.childNodes[ci].tagName.toLowerCase() == 'span') span = lnk.childNodes[ci];
    }
    var spantext = ts_getInnerText(span);
    var td = lnk.parentNode;
    var column = td.cellIndex;
    var table = getParent(td,'TABLE');
    
    // Work out a type for the column
    if (table.rows.length <= 1) return;
    var itm = ts_getInnerText(table.rows[1].cells[column]);
    sortfn = ts_sort_caseinsensitive;
    if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d\d\d$/)) sortfn = ts_sort_date;
    if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d$/)) sortfn = ts_sort_date;
    if (itm.match(/^[\x{00A3}$]/)) sortfn = ts_sort_currency;
    if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;
    SORT_COLUMN_INDEX = column;
    var firstRow = new Array();
    var newRows = new Array();
    for (i=0;i<table.tBodies[0].rows[0].length;i++) { firstRow[i] = table.rows[0][i]; }
    for (j=1;j<table.tBodies[0].rows.length;j++) { newRows[j-1] = table.rows[j]; }

    newRows.sort(sortfn);

    if (span.getAttribute("sortdir") == 'down') {
        // ARROW = '&uarr;';
        ARROW = '<img src="/global/css/standard/sort-asc.png" alt="" border="0"/>';
        newRows.reverse();
        span.setAttribute('sortdir','up');
//        span.className.replace(' sort-desc', "");
//        span.className.replace(' sort-asc', "");
//        span.className += " sort-asc";
    } else {
        // ARROW = '&darr;';
        ARROW = '<img src="/global/css/standard/sort-desc.png" alt="" border="0"/>';
        span.setAttribute('sortdir','down');
//        span.className.replace(' sort-desc', "");
//        span.className.replace(' sort-asc', "");
//        span.className += " sort-desc";
    }
    
    // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
    // don't do sortbottom rows
    for (i=0;i<newRows.length;i++) { if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))) table.tBodies[0].appendChild(newRows[i]);}
    // do sortbottom rows only
    for (i=0;i<newRows.length;i++) { if (newRows[i].className && (newRows[i].className.indexOf('sortbottom') != -1)) table.tBodies[0].appendChild(newRows[i]);}
    
    // Delete any other arrows there may be showing
    var allspans = document.getElementsByTagName("span");
    for (var ci=0;ci<allspans.length;ci++) {
        if (allspans[ci].className == 'list-sortarrow') {
            if (getParent(allspans[ci],"table") == getParent(lnk,"table")) { // in the same table as us?
                allspans[ci].innerHTML = '';
            }
        }
    }
        
    span.innerHTML = ARROW;
    stripe(table.id);
}

function getParent(el, pTagName) {
	if (el == null) return null;
	else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase())	// Gecko bug, supposed to be uppercase
		return el;
	else
		return getParent(el.parentNode, pTagName);
}
function ts_sort_date(a,b) {
    // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
    if (aa.length == 10) {
        dt1 = aa.substr(6,4)+aa.substr(3,2)+aa.substr(0,2);
    } else {
        yr = aa.substr(6,2);
        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }
        dt1 = yr+aa.substr(3,2)+aa.substr(0,2);
    }
    if (bb.length == 10) {
        dt2 = bb.substr(6,4)+bb.substr(3,2)+bb.substr(0,2);
    } else {
        yr = bb.substr(6,2);
        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }
        dt2 = yr+bb.substr(3,2)+bb.substr(0,2);
    }
    if (dt1==dt2) return 0;
    if (dt1<dt2) return -1;
    return 1;
}

function ts_sort_currency(a,b) {
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.]/g,'');
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.]/g,'');
    return parseFloat(aa) - parseFloat(bb);
}

function ts_sort_numeric(a,b) {
    aa = parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));
    if (isNaN(aa)) aa = 0;
    bb = parseFloat(ts_getInnerText(b.cells[SORT_COLUMN_INDEX])); 
    if (isNaN(bb)) bb = 0;
    return aa-bb;
}

function ts_sort_caseinsensitive(a,b) {
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).toLowerCase();
    if (aa==bb) return 0;
    if (aa<bb) return -1;
    return 1;
}

function ts_sort_default(a,b) {
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
    if (aa==bb) return 0;
    if (aa<bb) return -1;
    return 1;
}