addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;
var multipleHeaders;

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);
            multipleHeaders = false;
            
            if ((' '+thisTbl.className+' ').indexOf("multipleHeaders") != -1) {
				multipleHeaders = true;
            }
            ts_makeSortable(thisTbl);
        }
    }
}

function ts_makeSortable(table) {
    if (table.rows && table.rows.length > 0) {
        var firstRow = table.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];
        if ((' '+cell.className+' ').indexOf("nosort") == -1) 
        {
			var txt = ts_getInnerText(cell, true);
						
			cell.innerHTML = '<a href="#" class="sortheader" onclick="ts_resortTable(this,' + i + ', false);return false;">'+txt+'<span class="sortarrow"></span></a>';			
		}
    }
}

function ts_getInnerText(el, checkInnerHTML) {
	
	if (typeof el == "string") return el;
	if (typeof el == "undefined") {return '';}	
	if (el.nodeName == "IMG") {return ts_getInnerTextImage(el); }	
	
	if (checkInnerHTML == true)		
		if (el.innerHTML) return el.innerHTML;
	else
		if (el.innerText) return el.innerText;
	
	/////////////////////////////////////
	// Tom, not sure what of this code you added to debug, but I think using innerHTML
	// instead of innerText will work
	// e.g. return el.innerHTML;
	/////////////////////////////////////
	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], checkInnerHTML);
				break;
			case 3:	//TEXT_NODE
				str += cs[i].nodeValue;
				break;
		}
	}	
	return str;
}

function ts_getInnerTextImage(el)
{
	var str = '';
	
	if (el.attributes.getNamedItem("onMouseOver"))
		str = '<IMG src="' + el.src + '" OnMouseOver="' + el.attributes.getNamedItem("onMouseOver").nodeValue + '" OnMouseOut="' + el.attributes.getNamedItem("onMouseOut").nodeValue + '" title="' + el.attributes.getNamedItem("title").nodeValue + '">';
	else
		str = '<IMG src="' + el.src + '">';
	
	return (str);
}

function ts_resortTable(lnk, cellIndex, alwaysSortDesc) {
    // get the span
    var span;
    var cellClass;
    var highlightIndex;
    
    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, false);
    var td = lnk.parentNode;
    //var column = td.cellIndex;
    var column = cellIndex || td.cellIndex;
    var table = getParent(td,'TABLE');
    
    // Set default sort direction
    if(!alwaysSortDesc)
    {
		if (span.getAttribute("sortdir")==null) {
			if ((' '+td.className+' ').indexOf("sortasc") != -1) {
				span.setAttribute('sortdir','up');
			}
			else
				span.setAttribute('sortdir','down');
		}
	}
	else
	{
		span.setAttribute('sortdir', 'down');
	}
    
    // Work out a type for the column
    if (table.rows.length <= 1) return;
        
    if ((' '+td.className+' ').indexOf("sortsalary") != -1) 
    {
		sortfn = ts_sort_salary;
	}
    else if ((' '+td.className+' ').indexOf("sortlevel") != -1) 
    {
		sortfn = ts_sort_level;
	}
    else if ((' '+td.className+' ').indexOf("sortpos") != -1) 
    {
		sortfn = ts_sort_position;
	}
    else if ((' '+td.className+' ').indexOf("sortrole") != -1) 
    {
		sortfn = ts_sort_role;
	}
    else if ((' '+td.className+' ').indexOf("sortheight") != -1) 
    {
		sortfn = ts_sort_height;
	}
    else if ((' '+td.className+' ').indexOf("sortrecord") != -1) 
    {
		sortfn = ts_sort_record;
	}
	else if ((' '+td.className+' ').indexOf("sortnum") != -1) 
	{
		sortfn = ts_sort_numeric;
	}
    else 
    {
		var iIdx=1;
		var itm = ts_getInnerText(table.rows[iIdx].cells[column], false);

		while (escape(itm)=='%A0' && iIdx<table.rows.length){
			iIdx++;
			var itm = ts_getInnerText(table.rows[iIdx].cells[column], false);					
		}
		
		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(/^[£$]/)) sortfn = ts_sort_currency;
		if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;
    }
    
    
    SORT_COLUMN_INDEX = column;
    var firstRow = new Array();
    var newRows = new Array();
    var countHeader=0;
    var count = 0;
    var canChange = true;
    var tempHeaderRows = new Array();
    for (i=0;i<table.rows[0].length;i++) {firstRow[i] = table.rows[0][i];}
	for (j=1;j<table.rows.length;j++) {	
		if ((j - countHeader) % 15 != 0 || multipleHeaders == false) {	
			newRows[count] = table.rows[j];
			count++;
			
			if ((j - countHeader) % 15 == 1 && canChange == true) {
				countHeader++;
				canChange = false;
			}
		} else if ((j - countHeader) % 15 == 0 && canChange == false) {
			tempHeaderRows[countHeader - 1] = table.rows[j];
			canChange = true;
		}
	}
	
	
    newRows.sort(sortfn);
    
    if (span.getAttribute("sortdir") == 'down') {
        ARROW = '&nbsp;&nbsp;&uarr;';
        newRows.reverse();
        span.setAttribute('sortdir','up');
    } else {
        ARROW = '&nbsp;&nbsp;&darr;';
        span.setAttribute('sortdir','down');
    }
    
    // Set correct row class
    var rowCount=0;
    for (j=0;j<newRows.length;j++) { 		
		if (newRows[j].className && (newRows[j].className.indexOf('sortbottom') == -1)) {
			if (newRows[j].className.indexOf('highlight') == -1 && newRows[j].className.indexOf('averages') == -1) 
			{
				if (rowCount % 2){newRows[j].className='even';}
				else {newRows[j].className='odd';}
			}
			
			// Set hightlight on column
			for (k=0;k<newRows[j].cells.length;k++) 
			{ 		
				cellClass=newRows[j].cells[k].className;
				highlightIndex=(' '+cellClass+' ').indexOf("highlight");
				if (k==SORT_COLUMN_INDEX) {
					if (highlightIndex == -1) {newRows[j].cells[k].className=cellClass + ' highlight';}
				}
				else if (highlightIndex != -1) newRows[j].cells[k].className=cellClass.slice(0,highlightIndex-1);				
			}
			
			rowCount++;
		}		
	}
	
    // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
    // don't do sortbottom rows    
     countHeader = 0; 
    for (i=0;i<newRows.length;i++) { 
		//alert(i + ' ' + newRows[i].cells[0].innerHTML + ' ---- ' + newRows[i].className);
		if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))){
			if (i % 15 == 0 && multipleHeaders == true && i > 0) {
				table.tBodies[0].appendChild(tempHeaderRows[countHeader]);
				countHeader++;
			}
			table.tBodies[0].appendChild(newRows[i]);
		}		
	}
    // do sortbottom rows only    
    for (i=0;i<newRows.length;i++) { 
		//alert(i + ' ' + newRows[i].cells[0].innerHTML + ' ---- ' + newRows[i].className);
		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 == 'sortarrow') {
            if (getParent(allspans[ci],"table") == getParent(lnk,"table")) { // in the same table as us?
                allspans[ci].innerHTML = '&nbsp;&nbsp;&nbsp;';
            }
        }
    }*/
        
    //span.innerHTML = ARROW;
}

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

function ts_sort_numeric(a,b) { 
    aa = parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false));
    if (isNaN(aa)) aa = -1;
    bb = parseFloat(ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false)); 
    if (isNaN(bb)) bb = -1;
    return aa-bb;
}

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

function ts_sort_height(a,b) {
    var a_adj, b_adj, i;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    
    a_adj = Number(aa.charAt(0) * 12) + Number(aa.substring(2));
    
    b_adj = Number(bb.charAt(0) * 12) + Number(bb.substring(2));
        
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

function ts_sort_record(a,b) {
    var a_adj, b_adj, i;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    
    i = aa.indexOf('-');
    if (i == -1)
		a_adj = Number(-1);
	else
		a_adj = Number(aa.substring(0,i));
		
    i = bb.indexOf('-');
    if (i == -1)
		b_adj = Number(-1);
	else
		b_adj = Number(bb.substring(0,i));
        
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

function ts_sort_level(a,b) {
    var a_adj, b_adj, i;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    
    a_adj	= getLevelValue(aa);
    b_adj	= getLevelValue(bb);
            
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

function getLevelValue(a)
{
	switch (a){
		case 'ml': return(5);
		case 'rl': return(0);
		case 'rookie': return(0);
		case 'aaa': return(4);
		case 'aa': return(3);
		case 'hia': return(2);
		case 'high a': return(2);
		case 'loa': return(1);
		case 'low a': return(1);
		default: return(6);
	}
}

function getPosValue(a)
{
	switch (a)
	{
	case 'p': return (1);
	case 'c': return (2);
	case '1b': return (3);
	case '2b': return (4);
	case '3b': return (5);
	case 'ss': return (6);
	case 'lf': return (7);
	case 'cf': return (8);
	case 'rf': return (9);
	case 'dh': return (10);
	default: return (12);
	}
}
function getRoleValue(a)
{
	switch (a)
	{
	case 'sp1': return (1);
	case 'sp2': return (2);
	case 'sp3': return (3);
	case 'sp4': return (4);
	case 'sp5': return (5);
	case 'sp6': return (6);
	case 't1a': return (7);
	case 't1b': return (8);
	case 't2a': return (9);
	case 't2b': return (10);
	case 't3a': return (11);
	case 't3b': return (12);
	case 't4a': return (13);
	case 't4b': return (14);
	case 'lra': return (15);
	case 'lrb': return (16);
	case 'sua': return (17);
	case 'sub': return (18);
	case 'lhs': return (19);
	case 'rhs': return (20);
	case 'cla': return (21);
	case 'clb': return (22);
	case 'mop': return (23);
	case 'p': return (22);
	default: return (30);
	}
}


function ts_sort_role(a,b) {
    var a_adj, b_adj, i;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    
    a_adj	= getRoleValue(aa);
    b_adj	= getRoleValue(bb);
            
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

function ts_sort_position(a,b) {
    var a_adj, b_adj, i;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    
    a_adj	= getPosValue(aa);
    b_adj	= getPosValue(bb);
            
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

function ts_sort_salary(a,b) {
    var a_adj, b_adj;
    
    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX], false).toLowerCase();
    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX], false).toLowerCase();
     
    if (aa.lastIndexOf('k') != -1)
    {		
		a_adj	= aa.substring(1,aa.length - 1);
		a_adj	= a_adj.replace(/[^0-9.]/g,'');
		a_adj	= Number(a_adj * 1000);		
    }
    else if (aa.lastIndexOf('m') != -1)
    {
		a_adj	= Number(aa.substring(1,aa.length-1) * 1000000);
    }
    else
    {
		a_adj	= aa.substring(1,aa.length);
		a_adj	= Number(a_adj.replace(/[^0-9.]/g,''));
    }
    
    if (bb.lastIndexOf('k') != -1)
    {
		b_adj	= bb.substring(1,bb.length - 1);
		b_adj	= b_adj.replace(/[^0-9.]/g,'');
		b_adj	= Number(b_adj * 1000);		
    }
    else if (bb.lastIndexOf('m') != -1)
    {
		b_adj	= Number(bb.substring(1,bb.length-1) * 1000000);
    }
    else
    {
		b_adj	= bb.substring(1,bb.length);
		b_adj	= Number(b_adj.replace(/[^0-9.]/g,''));
    }
        
    if (a_adj==b_adj) return 0;
    if (a_adj<b_adj) return -1;
    return 1;
}

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

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");
  }
}