/*
UPDATES:
	Date		Dev			Descrip
	10/6/2006	KAlagu	    Fixed problem of cursor style not changing back to default when there are fewer that 1 rows in the table. 
	10/9/2006	Jin Park	Removed     so column headers don't display extended underline after the title
	6/21/2007   Scot Fithen Fix sort issues with numbers (negatives,commas,percents)
	6/22/2007   KAlagu      Refined currency and numeric sort functions
	2/25/2008	Jin Park	updating sorttable and stripetable based on div33 and fixing bugs on multiple tbodies in sorttable.js
	10/10/2008	Jin Park	Fixing date sort found by Kevin Thomason and using native Date class to compare dates.
*/						
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("sortable") != -1)) {
            //initTable(thisTbl.id);
            ts_makeSortable(thisTbl);
        }
    }
}

function ts_makeSortable(table) {
	if(table.getElementsByTagName('thead').length == 1)
	{
		 var firstRow = table.getElementsByTagName('thead')[0];
		  var headers = firstRow.getElementsByTagName('th');
	}
	else
	{
	    if (table.rows && table.rows.length > 0) {
	        var firstRow = table.rows[0];
	        var headers = firstRow.getElementsByTagName('td');
	    }
	}
    if (!firstRow) return;
    // We have a first row: assume it's the header, and make its contents clickable links
    for (var i=0; i<headers.length ;i++) {
        var cell = headers[i];
        var sortAttribute = cell.getAttribute("sort");
        //alert(sortAttribute);
        if (sortAttribute != null && sortAttribute == "false"){
            continue;
        }
        var txt = ts_getInnerText(cell);
        cell.innerHTML = '<a href="#" class="sortheader" title="Click to sort" onclick="ts_resortTable(this);return false;">'+txt+'<span class="sortarrow"></span></a>';	// 10/9/2006 - jp - removed &nbsp;&nbsp;&nbsp;
    }
}

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) {
//alert("1");
    document.body.style.cursor="wait";

    // 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');
    var bodies = table.getElementsByTagName('tbody');
    if(bodies.length == 0)
    {
    	bodies =table;
    }
    for(var xx = 0; xx < bodies.length; xx++)
    {
	    table = bodies[xx];
	    // Work out a type for the column
	    if (table.rows.length <= 1) break;
	    var itm = ts_getInnerText(table.rows[1].cells[column]);
	    itm = itm.replace(/^\s+|\s+$/g, '') ;
	    sortfn = ts_sort_caseinsensitive;
	   
	    
	    if (itm.match(/^\d{1,2}[\/-]\d{1,2}[\/-]\d{2,4}$/)) sortfn = ts_sort_date;
	    if (itm.match(/^[?$]/)) sortfn = ts_sort_currency;
	    //if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;
	    if (itm.match(/^[+-]?\(?\$?\d+(,\d+)*(\.\d+)?\)?%?$/)) sortfn = ts_sort_currency;
	    
	   
	     SORT_COLUMN_INDEX = column;
	   // var firstRow = new Array();
	    var newRows = new Array();
	    var j=1;
	    if(getParent(table,"TABLE").getElementsByTagName('thead').length)
	    {
	    	j=0;
	    }
	    for ( ;j<table.rows.length;j++) { newRows[newRows.length] = table.rows[j]; }
//alert("sorting...");
	    newRows.sort(sortfn);
//alert("done");	
	    if (span.getAttribute("sortdir") == 'down') {
	        ARROW = '&nbsp;&nbsp;&uarr;';
	        newRows.reverse();
	        span.setAttribute('sortdir','up');
	    } else {
	        ARROW = '&nbsp;&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.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.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 = '';		// 10/9/2006 - jp - removed &nbsp;&nbsp;&nbsp;
	            }
	        }
	    }
	        
	    span.innerHTML = ARROW;
	}
    if (window.stripeTable)
    {
        stripeTable(getParent(td,'TABLE'));	// depending on the number of tbodies, the table variable was set to an array of tbodies
    }

    document.body.style.cursor="default";
}

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]);
    dt1 = new Date(aa);
    dt2 = new Date(bb);
    /*if (aa.length == 10) {
        //dt1 = aa.substr(6,4)+aa.substr(3,2)+aa.substr(0,2);	// assumes format is dd*mm*yyyy - european?
        dt1 = aa.substr(6,4)+aa.substr(0,2)+aa.substr(3,2);		// assumes format is mm*dd*yyyy
    } 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);		// assumes format is dd*mm*yyyy - european?
        dt2 = bb.substr(6,4)+bb.substr(0,2)+bb.substr(3,2);		// assumes format is mm*dd*yyyy
    } 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,'');
	aa = aa.replace(/^\s+|\s+$/g, '') ;
	if (!aa || isNaN(aa))
		aa = 0;
	bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.-]/g,'');
	bb = bb.replace(/^\s+|\s+$/g, '') ;
	if (!bb || isNaN(bb))
		bb = 0;
	return parseFloat(aa) - parseFloat(bb);
}
/*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");
  }
}