//
// de http://www.kryogenix.org/code/browser/sorttable/
//
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;
  }
  var tbls=document.getElementsByTagName("table");
  for (ti=0; ti<tbls.length; ti++) {
    thisTbl=tbls[ti];
    if (/^sortable$/i.test(thisTbl.className)) {
      ts_makeSortable(thisTbl);
    }
  }
}

function ts_makeSortable(table) {
  if (table.rows && table.rows.length>0) {
    var firstRow=table.rows[0];
  } else {
    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="" onclick="ts_resortTable(this);return false;" STYLE="width: 100%;">'+txt+'<span class="sortarrow"></span></a>';
  }
  // We order by default by the first column
  ts_resortTable(table.rows[0].cells[0].childNodes[0]);
}

function ts_resortTable(lnk) {
  window.status="Espereu mentre s'ordena la taula...";
  // 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(/^[0-9.'\s]+$/)) {
    // david 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;&uarr;';
    newRows.reverse();
    span.setAttribute('sortdir','up');
  } else {
    ARROW='&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('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=='sortarrow') {
      if (getParent(allspans[ci],"table")==getParent(lnk,"table")) {
        // is it in the same table as us?
        allspans[ci].innerHTML='';
      }
    }
  }
  span.innerHTML=ARROW;
  window.status="";
}

function ts_getInnerText(el) {
  if (typeof el=="string") {
    return el;
  }
  if (typeof el=="undefined") {
    return el
  }
  if (el.innerText) {
    //Not needed but it is faster
    return el.innerText;
  }
  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 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
  var aa=ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
  var bb=ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
  var yr;
  if (aa.length==10) {
    var 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;
    }
    var dt1=yr+aa.substr(3,2)+aa.substr(0,2);
  }
  if (bb.length==10) {
    var 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;
    }
    var dt2=yr+bb.substr(3,2)+bb.substr(0,2);
  }
  return (dt1==dt2?0:(dt1<dt2?-1:+1));
}

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

function ts_sort_caseinsensitive(a,b) {
  var aa=ts_sort_upper(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));
  var bb=ts_sort_upper(ts_getInnerText(b.cells[SORT_COLUMN_INDEX]));
  return (aa==bb?0:(aa<bb?-1:+1));
}

// addEvent and removeEvent
// cross-browser event handling for IE5+,  NS6 and Mozilla
// By Scott Andrew
function addEvent(elm, evType, fn, useCapture) {
  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_sort_upper(ISO) {
  var FAN="", P;
  for (var I=0; I<ISO.length; I++) {
    if (ISO.charAt(I)>="@") {
      P="@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~��������������������������������������������������������������������������������������������������������������������������������".indexOf(ISO.charAt(I));
      FAN+=" ABCDEFGHIJKLMNOPQRSTUVWXYZ      ABCDEFGHIJKLMNOPQRSTUVWXYZ     E                                 CP Y   CA   R   23 MP  1O 113 AAAAAAACEEEEIIIIDNOOOOOXOUUUUTTSAAAAAAACEEEEIIIIDNOOOOO OUUUUYTY".charAt(P);
    } else {
      FAN+=ISO.charAt(I);
    }
  }
  return FAN;
}