/* courtesy of kryogenix.org
 * Reference URL: http://kryogenix.org/code/browser/sorttable/
 * Modified for BF2E.com
 */
addEvent(window, "load", sortables_init);
var SORT_COLUMN_INDEX;
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")... #changed by jay 2006-04-11
    if (((' ' + thisTbl.className + ' ').indexOf("subsection") != -1) && (thisTbl.id)) //initTable(thisTbl.id);
      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];
    var txt = ts_getInnerText(cell);
    cell.innerHTML = '<a href="#" class="sortheader" '+ 
    'onclick="ts_resortTable(this, '+i+');return false;">' + 
    txt + '<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
  }
}
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,clid)
{
  // 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 = clid || 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(/^[£$]/)) 
    sortfn = ts_sort_currency;
  // note: next line modified to allow "0-9", "%", ".", ":", and ","
  // note: ":", "%", "," all get stripped to null later
  if (itm.match(/^[\d\%:,\.]+$/))
    sortfn = ts_sort_numeric;
  SORT_COLUMN_INDEX = column;
  var firstRow = new Array();
  var newRows = new Array();
  for (i = 0; i < table.rows[0].length; i++)
    firstRow[i] = table.rows[0][i];
  for (j = 1; j < table.rows.length; j++)
    newRows[j-1] = table.rows[j];
  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');
  }
  // 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('tail') == -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('tot') != -1))
        table.tBodies[0].appendChild(newRows[i]);
    for (i = 0;i < newRows.length; i++)
      if (newRows[i].className &&
           (newRows[i].className.indexOf('avg') != -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())
    return el; // Gecko bug, supposed to be uppercase
	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 = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
  aa = aa.replace(/:/,"");
  aa = aa.replace(/,/,"");
  aa = aa.replace(/\%/,"");
  aa = parseFloat(aa);
  if (isNaN(aa))
    aa = 0;
  bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
  bb = bb.replace(/:/,"");
  bb = bb.replace(/,/,"");
  bb = bb.replace(/\%/,"");
  bb = parseFloat(bb); 
  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;
}
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");
}