/* Javascript to style odd/even table rows
	Derived from 'Zebra Tables' by David F. Miller (http://www.alistapart.com/articles/zebratables/)
	Modified by Jop de Klein, february 2005 (http://validweb.nl/artikelen/javascript/better-zebra-tables/)
*/
function stripetables() {
	$(".stripetable tbody tr").mouseover(function() {$(this).addClass("hoverTR");}).mouseout(function() 
		{$(this).removeClass("hoverTR");
	});
	$(".stripetable tbody tr:odd").removeClass("even");
	$(".stripetable tbody tr:even").addClass("even");
}
/********************** filter table ******************************/
 								  
 function filter2 (phrase, _id){
  var words = phrase.value.toLowerCase().split(" ");
  var table = document.getElementById(_id);
  var ele;
  for (var r = 1; r < table.rows.length; r++){
   ele = table.rows[r].innerHTML.replace(/<[^>]+>/g,"");
   var displayStyle = 'none';
   for (var i = 0; i < words.length; i++) {
    if (ele.toLowerCase().indexOf(words[i])>=0)
     displayStyle = '';
    else {
     displayStyle = 'none';
     break;
    }
   }
   table.rows[r].style.display = displayStyle;
  }
  $(".stripetable tbody tr:visible:odd").removeClass("even");
  $(".stripetable tbody tr:visible:even").addClass("even");
 
 }
	
 
 



/******************** sortable tables *****************************/
var SORT_COLUMN_INDEX;

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(th) {
    // 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 table = getParent(th,'TABLE');
    //var spantext = ts_getInnerText(span);
    var column = th.cellIndex;
    // 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(/^[£$]/)) sortfn = ts_sort_currency;
    if (itm.match(/^[\d\.]+$/)) 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 (th.className == 'sortdesc') {
		newRows.reverse();
    	th.className = 'sortasc';
    	$('table.sortable th').removeClass('sortdesc');
	} else {
		th.className = 'sortdesc';
		$('table.sortable th').removeClass('sortasc');

	}
    
    // 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")) { // in the same table as us?
                allspans[ci].innerHTML = '';
            }
        }
    }   
   stripetables();
}

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;
}
$(document).ready(function() { 
	stripetables();
	
    $("table.sortable").each(function(i){
       	$(this).find('th').click(function() {
			ts_resortTable(this);
		});
        if(this.caption) {
        	this.caption.innerHTML += ' <span>Click column headers to sort</span>';
        }
        else {
           	var sortInfo = document.createElement('caption');
            sortInfo.innerHTML = '<span>Click column headers to sort</span>';
            this.insertBefore(sortInfo,this.firstChild);
        }
	});
	$("table.filtertable caption").each(function() {
		$(this).children().before('<span class="filter">Filter: <input type="text" class="filterbox" value="Enter text to filter table"/></span>');
	});	
	$("table.filtertable").each(function(i){
		table = $(this);
		table.find('.filterbox').keyup(function(){
  			filter2(this, $(table).attr('id'), 1);
  		})	.focus(function(){
    		if(this.value!='') {
     			this.value=''
    		}
 		});
 	});	

});