/**
*
*  Sortable HTML table
*  http://www.webtoolkit.info/
*
**/
function SortableTable(tableEl) {
	this.tbody = tableEl.getElementsByTagName("tbody");
	this.thead = tableEl.getElementsByTagName("thead");
	this.tfoot = tableEl.getElementsByTagName("tfoot");
	this.getInnerText = function (el) {
		if (typeof (el.textContent) != "undefined") {
			return el.textContent.replace(/,/,"");
		}
		if (typeof (el.innerText) != "undefined") {
			return el.innerText;
		}
		if (typeof (el.innerHTML) == "string") {
			return el.innerHTML.replace(/<[^<>]+>/g, "");
		}
	};
	this.getInizioTextDate = function (el) {
		var idx = 0;
		if (typeof (el.textContent) != "undefined") {
			var appo = el.textContent.match(/\d\d[\/]+\d\d[\/]+\d\d\d\d/);
			idx = el.textContent.indexOf(appo);
		}
		return idx;
	};
	this.getParent = function (el, pTagName) {
		if (el == null) {
			return null;
		} else {
			if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase()) {
				return el;
			} else {
				return this.getParent(el.parentNode, pTagName);
			}
		}
	};
	this.sort = function (cell) {
		var column = cell.cellIndex;
		var itm = this.getInnerText(this.tbody[0].rows[1].cells[column]);
		var sortfn = this.sortCaseInsensitive;
		if (itm.match(/\d\d[\/]+\d\d[\/]+\d\d\d\d/)) {
			sortfn = this.sortDate;
		} // date format dd-mm-yyyy
		if (itm.replace(/^\s+|\s+$/g, "").match(/^[\d\.][\d\,]+$/)) {
			sortfn = this.sortNumeric;
		}
	
		this.sortColumnIndex = column;
		var newRows = new Array();
		for (j = 0; j < this.tbody[0].rows.length; j++) {
			newRows[j] = this.tbody[0].rows[j];
		}
		newRows.sort(sortfn);
		var celleRigaZero = this.thead[0].rows[0].cells;
		for(idxC = 0; idxC < celleRigaZero.length - 1; idxC++){
			celleRigaZero[idxC].className="sortedASC";
		}
		if (cell.getAttribute("sortdir") == "down") {
			newRows.reverse();
			cell.setAttribute("sortdir", "up");
			cell.className="sortedDESC";
		} else {
			cell.setAttribute("sortdir", "down");
			cell.className="sortedASC";			
		}
		for (i = 0; i < newRows.length; i++) {
			this.tbody[0].appendChild(newRows[i]);
		}
	};
	this.sortCaseInsensitive = function (a, b) {
		aa = thisObject.getInnerText(a.cells[thisObject.sortColumnIndex]).toLowerCase();
		bb = thisObject.getInnerText(b.cells[thisObject.sortColumnIndex]).toLowerCase();
		if (aa == bb) {
			return 0;
		}
		if (aa < bb) {
			return -1;
		}
		return 1;
	};
	this.sortDate = function (a, b) {
		aa = thisObject.getInnerText(a.cells[thisObject.sortColumnIndex]);
		bb = thisObject.getInnerText(b.cells[thisObject.sortColumnIndex]);
		idx1 = thisObject.getInizioTextDate(a.cells[thisObject.sortColumnIndex]);
		idx2 = thisObject.getInizioTextDate(b.cells[thisObject.sortColumnIndex]);
		date1 = aa.substr(idx1 + 6, 4) + aa.substr(idx1 + 3, 2) + aa.substr(idx1 + 0, 2);
		date2 = bb.substr(idx2 + 6, 4) + bb.substr(idx2 + 3, 2) + bb.substr(idx2 + 0, 2);
		if (date1 == date2) {
			return 0;
		}
		if (date1 < date2) {
			return -1;
		}
		return 1;
	};
	this.sortNumeric = function (a, b) {
		aa = Number(thisObject.getInnerText(a.cells[thisObject.sortColumnIndex]));
		if (isNaN(aa)) {
			aa = 0;
		}
		if (aa < 10){
			aa = aa * 1000;
		}
		bb = Number(thisObject.getInnerText(b.cells[thisObject.sortColumnIndex]));
		if (isNaN(bb)) {
			bb = 0;
		}
		if (bb < 10){
			bb = bb * 1000;
		}

		if (aa == bb) {
			return 0;
		}
		if (aa < bb) {
			return -1;
		}
		return 1;
	};

	// define variables
	var thisObject = this;
	var sortSection = this.thead;

	// constructor actions
	if (!(this.tbody && this.tbody[0].rows && this.tbody[0].rows.length > 0)) {
		return;
	}
	if (sortSection && sortSection[0].rows && sortSection[0].rows.length > 0) {
		var sortRow = sortSection[0].rows[0];
	} else {
		return;
	}
	for (var i = 0; i < sortRow.cells.length; i++) {
		sortRow.cells[i].sTable = this;
		sortRow.cells[i].onclick = function () {
			this.sTable.sort(this);
			return false;
		};
	}
}