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");
	var sorttablenr=0;
    for (ti=0;ti<tbls.length;ti++) {
        thisTbl = tbls[ti];
        if (((' '+thisTbl.className+' ').indexOf("sortable") != -1)) {
		
		  if (!thisTbl.id) {
		  	sorttablenr=sorttablenr+1;
		  	thisTbl.id="sorttable_" + sorttablenr;
		  }
		  
		  
            //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);
        if (cell.className.indexOf("nosort")==-1) 
        {
        cell.className="sortable";
        cell.setAttribute("columnnr",i);
        cell.onmousedown=function() {  ts_resortTable(this, i);  };
        }
    }
}

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_Find_FirstCellInnerTextWithValue(table, column)
{
    for(i = 1;i<table.rows.length;i++)
    {   
        var cellValue = ts_getInnerText(table.rows[i].cells[column]);
        if (cellValue != null)
        {
           cellValue = cellValue.replace(/^\s+|\s+$/g,"")
        }
        if ( cellValue!= null && cellValue != "")
            return cellValue;
    }
     return ts_getInnerText(table.rows[1].cells[column]);
}
function ts_resortTable(lnk,clid) {
    // get the span
  //  var span;
  //  for (var ci=0;ci<lnk.childNodes.length;ci++) {
  //      if (lnk.childNodes[ci].tagName && lnk.childNodes[ci].tagName.toLowerCase() == 'span') span = lnk.childNodes[ci];
  //  }
  //  alert(span);
  //  var spantext = ts_getInnerText(span);
    var td = lnk;
   var column = clid || td.cellIndex;
    column=clid;
    column=td.getAttribute("columnnr");
    var table = getParent(td,'TABLE');
    // Work out a type for the column
    if (table.rows.length <= 1) return;
    //var itm = ts_getInnerText(table.rows[1].cells[column]);
    var itm = ts_Find_FirstCellInnerTextWithValue(table,column);
    //alert("'" + itm +"'");
    sortfn = ts_sort_caseinsensitive;
    if (itm.match(/^[£$]/)) sortfn = ts_sort_currency;
    if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;
   if (itm.match(/^[\d\,]+$/)) 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.match(/^\d\d.\d\d.\d\d\d\d/))  sortfn = ts_sort_date;
 
    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;
    
     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 tr = getParent(td,'TR');
    if (tr==null)
        tr=getParent(td,'TH');
     
    for (j=0;j<tr.cells.length;j++) 
    {
       if (tr.cells[j].className == "sortUp" || tr.cells[j].className == "sortDown")
         tr.cells[j].className="sortable";
    }    
   
    newRows.sort(sortfn);
    var className="";
    
    if (td.getAttribute("sortdir") == 'down') {
        className="sortDown"
        newRows.reverse();
        td.setAttribute('sortdir','up');
    } else {
       className="sortUp"
        td.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
    td.className=className;
    
    var trclass="";//background-color:AliceBlue;
    for (j=1;j<table.rows.length;j++) { 
        table.rows[j].style.background=trclass; 
        if (trclass=="")
            trclass="AliceBlue";
        else 
            trclass="";
    }
    
}
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;
}


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");
  }
} 

// -------------- next block supports highlighting of search result

var times = 0;

function hex( n ) { return ( n<16 ? '0' : '' ) + n.toString(16); }

function highlight( s, o ) {
  if( !s ) { return 0; }
  var d = window.document; //, f = d.forms.f.elements;
  //if( !f.regex.checked ) { s = s.replace( /([\\|^$()[\]{}.*+?])/g, '\\$1' ); }
  if( /^\s*$/.test( s ) ) { return 0; }
  //if( !f.phrase.checked ) { s = s.split( /\s+/ ).join( '|' ); }
  o = [ o || d.documentElement || d.body ];
  //var r = new RegExp( s, f.cases.checked ? 'g' : 'gi' ),
  var r = new RegExp( s, false ? 'g' : 'gi' ),
    h = d.createElement( 'span' ), i = 0, j, k, l, m, n=0, t;
  h.style.color = '#000';
  //h.style.backgroundColor = '#'+( times%2 ? ''+hex(((times+1)%5)*51)+'ff' : 'ff'+hex((times%5)*51)+'' )+'00';
  h.style.backgroundColor = '#C2CFE7';
  times++;
  do {
    m = o[i];
    if( m.nodeType===3 ) {
      r.lastIndex = 0;
      l = r.exec(m.nodeValue);
      if( l !== null ) {
        k = l[0].length;
        if( r.lastIndex > k ) {
          m.splitText( r.lastIndex - k );
          m = m.nextSibling;
        }
        if( m.nodeValue.length > k ) {
          m.splitText(k);
          o[i++] = m.nextSibling;
        }
        t = h.cloneNode( true );
        t.appendChild( d.createTextNode( l[0] ) );n++;
        m.parentNode.replaceChild( t, m );
      }
    } else {
      j = m.childNodes.length;
      while ( j ) { o[i++] = m.childNodes.item( --j ); }
    }
  } while( i-- );
  return n;
}


function unhighlight( s, o ) {
 var d = window.document;
 s = s.replace(/([\\|^$()[\]{}.*+?])/g, '\\$1').split( /\s+/ ).join( '|' );
 o = o || d.documentElement || d.body;
 var a = o.getElementsByTagName( 'span' ), i = a.length, j,
  re = new RegExp( '^' + s + '$', 'i' );
 while( i-- ) {
  j = a[i].firstChild;
  if( j ) {
   if( j.nodeType===3 && re.test( j.nodeValue ) ) {
    a[i].parentNode.replaceChild( d.createTextNode( j.nodeValue ), a[i] );
   }
  }
 }
 return false;
}