// comprimeren javascript en css: 
//http://www.creativyst.com/Prod/3/

// sorteren table headers (http://www.kryogenix.org/code/browser/sorttable/)
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) && (thisTbl.id)) {
						//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);
				cell.innerHTML = '<a href="#" class="sortheader" onclick="ts_resortTable(this);return false;">'+txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';
		}
}

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) {
		// 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');
		
		// 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 (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.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 = '&nbsp;&nbsp;&nbsp;';
						}
				}
		}
				
		span.innerHTML = ARROW;
}

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");
	}
} 

function checkform ( form )
{
		if (trim(form.naam.value) == "") {
			alert ( "vul a.u.b. je naam in" );
			form.naam.focus();
			return false ;
		}
		if (trim(form.comment.value) == "") {
			alert ( "vul a.u.b. je comment in" );
			form.comment.focus();
			return false ;
		}
		if (trim(form.user.value) == "") {
			alert ( "vul a.u.b. je gebruikersnaam in" );
			form.user.focus();
			return false ;
		}
		if (trim(form.pass.value) == "") {
			alert ( "vul a.u.b. je wachtwoord in" );
			form.pass.focus();
			return false ;
		}
		if (trim(form.log_titel.value) == "") {
			alert ( "vul a.u.b. de titel in" );
			form.log_titel.focus();
			return false ;
		}
		if (trim(form.log_tekst1.value) == "") {
			alert ( "vul a.u.b. de tekst in" );
			form.log_tekst1.focus();
			return false ;
		}
		if (trim(form.log_tekst2.value) == "") {
			alert ( "vul a.u.b. de samenvatting in" );
			form.log_tekst2.focus();
			return false ;
		}
		return true ;
	}
function trim(str)
{
		return str.replace(/^\s+|\s+$/g,'');
}