var http_request = false;
var http_request_timeout;

addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;

function checkall (amount_seq,onoff) {
    for (var i=1; i<=amount_seq;i++) {
	checkit (i,onoff);	
    }
}

function checkit (num,onoff) {
    var el = document.getElementsByName("check_seq_"+num);
    for (var i=0; i<el.length;i++) {
	el[i].checked = onoff;
    }
}


function display_seq (num) {

    var seq = document.getElementById("seq"+num);

    if (seq.style.display == "none") {
	seq.style.display = "inline";
    }
    else {
	seq.style.display = "none";
    }
}

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=1;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, '+i+');return false;">' + 
        txt+'<span class="sortarrow">&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,clid) {
    // 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 = clid || 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 = '&uarr;';
        newRows.reverse();
        span.setAttribute('sortdir','up');
    } else {
        ARROW = '&darr;';
        span.setAttribute('sortdir','down');
    }
    
    
    for (i=0;i<newRows.length;i++) { 
	if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))) {
	    if(i % 2 == 0) {
		newRows[i].style.backgroundColor = '#eee';
	    }
	    else {
		newRows[i].style.backgroundColor = '#fff';
	    }
	    table.tBodies[0].appendChild(newRows[i]);
	}
    }
    
    for (i=0;i<newRows.length;i++) { 
	if (newRows[i].className && (newRows[i].className.indexOf('sortbottom') != -1)) {
	    table.tBodies[0].appendChild(newRows[i]);
	}
    }

    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 Checkbox2QueryString(docForm) {

    var strSubmitContent = '';
    var formElem;
    var strLastElemName = '';
	
    for (i = 0; i < docForm.elements.length; i++) {
		
	formElem = docForm.elements[i];
	if ( formElem.type == 'checkbox') {
	    if (formElem.checked) {
		// Continuing multiple, same-name checkboxes
		if (formElem.name == strLastElemName) {
		    // Strip of end ampersand if there is one
		    if (strSubmitContent.lastIndexOf('&') == strSubmitContent.length-1) {
			strSubmitContent = strSubmitContent.substr(0, strSubmitContent.length - 1);
		    }
		    // Append value as comma-delimited string
		    strSubmitContent += ',' + escape(formElem.value);
		}
		else {
		    strSubmitContent += formElem.name + '=' + escape(formElem.value);
		}
		strSubmitContent += '&';
		strLastElemName = formElem.name;
	    }
	    	    
	}
    }
    
    strSubmitContent = strSubmitContent.substr(0, strSubmitContent.length - 1);
    //alert ("Parameter send:" + strSubmitContent);
    return strSubmitContent;
}

function makeDeleteRequest(url,cform) {

    var submitstr = Checkbox2QueryString(cform);

    http_request = false;

    if (window.XMLHttpRequest) { 
	http_request = new XMLHttpRequest();
	if (http_request.overrideMimeType) {
	    http_request.overrideMimeType('text/xml');
	}
    } else if (window.ActiveXObject) { 
	try {
	    http_request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	    try {
		http_request = new ActiveXObject("Microsoft.XMLHTTP");
	    } catch (e) {}
	}
    }
    
    if (!http_request) {
	alert('Ende : No XMLHTTP-Instance found');
	return false;
    }
    http_request.onreadystatechange = get_result;
    http_request.open('POST', url, true);
    http_request.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    http_request.send(submitstr);   
    http_request_timeout = window.setTimeout("abort_xhttp_request()", 20000); // 20 Sec
}

function get_result() {
    if (http_request.readyState == 4) {
	if (http_request.status == 200) {

	    if (http_request.responseText == 1 ) {
		deleteSeqFromSite();
	    }
	    else {
		alert('Remove sequence failed');
	    }
	}
	else {
	    alert('XMLHtmlRequest failed : ' + http_request.status);
	}
    }
    window.clearTimeout(http_request_timeout);
}

function abort_xhttp_request() {
   http_request.abort();
   alert("<b>XMLHtmlRequest-Timeout</b>");
}


function deleteSeqFromSite() {

    var docForm = document.getElementById("uform");

    for (i = 0; i < docForm.elements.length; i++) {
		
	formElem = docForm.elements[i];
	if ( formElem.type == 'checkbox') {
	    if (formElem.checked) {
		//alert("TAYPE " +formElem.parentNode.parentNode.nodeName);		
		formElem.checked  = false;
		formElem.disabled = true;
	    }
	}
    }
}


function changeStateFreestle(val) {

    if (val == "self_name") {
	document.getElementById("freestyle").disabled = false;
    }
    else {
	document.getElementById("freestyle").disabled = true;
	document.getElementById("freestyle").value    = "";
    }
}

function treeview (cform) {

    var submitstr = Checkbox2QueryString(cform);
    submitstr = 'treeview.pl?' + submitstr;
    //alert("SUB: " + submitstr);
    window.open(submitstr,'ViewTree');

}