var isCoche = false;
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("tabrecordtbx") != -1) && (thisTbl.id.indexOf("sort") != -1) && thisTbl.rows.length > 2) {
      isCoche = (thisTbl.id.indexOf("Coche") != -1)
      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];
     cell.innerHTML = '<a href="#" class="tabrowtitle" onclick="ts_resortTable(this);return false;">'+cell.innerHTML+'<span class="sortarrow"></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) {
  // get the span
  var span;
  
  if (isCoche) {
		var inputs = document.getElementsByTagName("input");
		var coche = new Array();
		for (var i = 0; i < inputs.length; i++) {
			if ((inputs[i].type.toLowerCase() == 'checkbox') && (inputs[i].id.indexOf("chk") != -1)) {
				var k = inputs[i].id.substr(3, inputs[i].id.length - 3).valueOf();
				coche[k] = inputs[i].checked;			
			}		
		}  
	}
  
  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_numeric;
  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.indexOf("%") != -1) sortfn = ts_sort_numeric;  
  if (itm.match(/^[a-z]/)) sortfn = ts_sort_caseinsensitive;  
  if (itm.match(/^[A-Z]/)) sortfn = ts_sort_caseinsensitive; 
  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();
  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]; }

  var recClass =  (newRows[0] != null ? newRows[0].className : "back_blue");
  var recClass1 = (newRows[1] != null ? newRows[1].className : "");

  newRows.sort(sortfn);
  if (span.getAttribute("sortdir") == 'down') {
    ARROW = '&uarr;';
    newRows.reverse();
    span.setAttribute('sortdir','up');
  } else {
    ARROW = '&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
  var lng = newRows[0].cells.length;
  
  for (i=0;i<newRows.length;i++) { 
  	if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))) 
  		{		
	    //newRows[i].setAttribute("className", (i % 2 == 0 ? recClass : recClass1));
	    newRows[i].className = (i % 2 == 0 ? recClass : recClass1);
   		  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 == 'sortarrow') {
      if (getParent(allspans[ci],"table") == getParent(lnk,"table")) { // in the same table as us?
        allspans[ci].innerHTML = '';
      }
    }
  }
  if (isCoche ) {
		var majinputs = document.getElementsByTagName("input");
		for (var i = 0; i < majinputs.length; i++) {
			if ((majinputs[i].type.toLowerCase() == 'checkbox')  && (majinputs[i].id.indexOf("chk") != -1) ) {
				var k = majinputs[i].id.substr(3, majinputs[i].id.length - 3).valueOf();	
				
				if (majinputs[i].checked != coche[k]) {
					majinputs[i].checked = coche[k];
					majinputs[i].defaultChecked = coche[k];
				}
			}
		}	
	}
  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]);
  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 bb-aa;
}

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");
  }
}