/*
Table sorting script  by Joost de Valk, check it out at http://www.joostdevalk.nl/code/sortable-table/.
Based on a script from http://www.kryogenix.org/code/browser/sorttable/.
Distributed under the MIT license: http://www.kryogenix.org/code/browser/licence.html .

Copyright (c) 1997-2007 Stuart Langridge, Joost de Valk.

Version 1.5.7
*/


function sortables_init_tour() {
	thisTbl = document.getElementById("tour-results-body");
	ts_makeSortable_tour(thisTbl);
}

function ts_makeSortable_tour(t) {
	headerTable = document.getElementById("tour-results-header");

	var firstRow = headerTable.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 != "unsortable" && cell.className.indexOf("unsortable") == -1) {
			cell.innerHTML = '<a href="#" class="sortheader" onclick="ts_resortTable_tour(this, '+i+');return false;">'+txt+'<span class="sortarrow"></span></a>';
		}
	}
}

function ts_resortTable_tour(lnk, clid) {
	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 t = document.getElementById("tour-results-body");
	// Work out a type for the column
	//if (t.rows.length <= 1) return;
	var itm = "";
	var i = 0;
	while (itm == "" && i < t.rows.length) {  
		var itm = ts_getInnerText(t.rows[i].cells[column]);
		itm = trim(itm);
		if (itm.substr(0,4) == "<!--" || itm.length == 0) {
			itm = "";
		}
		i++;
	}
	if (itm == "") return; 
	sortfn = ts_sort_caseinsensitive;
	if (itm.match(/^\d\d[\/\.-][a-zA-z][a-zA-Z][a-zA-Z][\/\.-]\d\d\d\d$/)) sortfn = ts_sort_date;
	if (itm.match(/^\d\d[\/\.-]\d\d[\/\.-]\d\d\d{2}?$/)) sortfn = ts_sort_date;
	if (itm.match(/^-?[£$€Û¢´]\d/)) sortfn = ts_sort_numeric;
	if (itm.match(/^-?(\d+[,\.]?)+(E[-+][\d]+)?%?$/)) sortfn = ts_sort_numeric;
	SORT_COLUMN_INDEX = column;
	var firstRow = new Array();
	var newRows = new Array();
	for (k=0;k<t.tBodies.length;k++) {

			// Do NOT skip the first row
			for (j=0;j<t.tBodies[k].rows.length;j++) { 
				newRows[j] = t.tBodies[k].rows[j];
			}

	}
	newRows.sort(sortfn);
	if (span.getAttribute("sortdir") == 'down') {
			ARROW = '&nbsp;&nbsp;<img src="'+ image_up.src + '" alt="&darr;"/>';
			newRows.reverse();
			span.setAttribute('sortdir','up');
	} else {
			ARROW = '&nbsp;&nbsp;<img src="'+ image_down.src + '" alt="&uarr;"/>';
			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))) {
			t.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)) 
			t.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 = '';
			}
		}
	}	
	span.innerHTML = ARROW;
	alternate(t);
}

function alternate_tour(table) {
	// Take object table and get all it's tbodies.
	var tableBodies = table;
	// Loop through these tbodies
	//for (var i = 0; i < tableBodies.length; i++) {
		// Take the tbody, and get all it's rows
		//var tableRows = tableBodies[i].getElementsByTagName("tr");
		// Loop through these rows
		for (var j = 0; j < table.rows.length; j++) {
			// Check if j is even, and apply classes for both possible results
			if ( (j % 2) == 0  ) {
				if ( !(table.rows[j].className.indexOf('odd') == -1) ) {
					table.rows[j].className = table.rows[j].className.replace('odd', 'even');
				} else {
					if ( table.rows[j].className.indexOf('even') == -1 ) {
						table.rows[j].className += " even";
					}
				}
			} else {
				if ( !(table.rows[j].className.indexOf('even') == -1) ) {
					table.rows[j].className = table.rows[j].className.replace('even', 'odd');
				} else {
					if ( table.rows[j].className.indexOf('odd') == -1 ) {
						table.rows[j].className += " odd";
					}
				}
			} 
		}
	//}
}