var stIsIE = /*@cc_on!@*/false;
sorttable = {
    init: function() {
        // quit if this function has already been called
        if (arguments.callee.done)
            return;
        // flag this function so we don't do the same thing twice
        arguments.callee.done = true;
        // kill the timer
        if (_timer)
            clearInterval(_timer);
        if ( ! document.createElement || !document.getElementsByTagName)
            return;
        sorttable.DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/;
        forEach(document.getElementsByTagName('table'), function(table) {
            if (table.className.search(/\bsortable\b/) != -1) {
                sorttable.makeSortable(table);
            }
        });
    },
    makeSortable: function(table) {
        // Safari doesn't support table.tHead, sigh
        if (table.tHead == null)
            table.tHead = table.getElementsByTagName('thead')[0];
        if (table.tHead.rows.length != 1)
            return;
        sortbottomrows = [];
        for (var i = 0; i < table.rows.length; i ++ ) {
            if (table.rows[i].className.search(/\bsortbottom\b/) != -1) {
                sortbottomrows[sortbottomrows.length] = table.rows[i];
            }
        }
        if (sortbottomrows) {
            if (table.tFoot == null) {
                // table doesn't have a tfoot. Create one.
                tfo = document.createElement('tfoot');
                table.appendChild(tfo);
            }
            for (var i = 0; i < sortbottomrows.length; i ++ ) {
                tfo.appendChild(sortbottomrows[i]);
            }
            delete sortbottomrows;
        }
        // work through each column and calculate its type
        headrow = table.tHead.rows[0].cells;
        for (var i = 0; i < headrow.length; i ++ ) {
            // manually override the type with a sorttable_type attribute
            if ( ! headrow[i].className.match(/\bsorttable_nosort\b/)) {
                // skip this col
                mtch = headrow[i].className.match(/\bsorttable_([a-z0-9]+)\b/);
                if (mtch) {
                    override = mtch[1];
                }
                if (mtch && typeof sorttable["sort_" + override] == 'function') {
                    headrow[i].sorttable_sortfunction = sorttable["sort_" + override];
                } else {
                    headrow[i].sorttable_sortfunction = sorttable.guessType(table, i);
                }
                // make it clickable to sort
                headrow[i].sorttable_columnindex = i;
                headrow[i].sorttable_tbody = table.tBodies[0];
                //headrow[i].sorttable_tbody = table.tBodies[0];
                dean_addEvent(headrow[i], "click", function(e) {
                    if (this.className.search(/\bsorttable_sorted\b/) != -1) {
                        // if we're already sorted by this column, just 
                        // reverse the table, which is quicker
                        sorttable.reverse(this.sorttable_tbody);
                        this.className = this.className.replace('sorttable_sorted', 'sorttable_sorted_reverse');
                        this.removeChild(document.getElementById('sorttable_sortfwdind'));
                        sortrevind = document.createElement('span');
                        sortrevind.id = "sorttable_sortrevind";
                        sortrevind.innerHTML = stIsIE ? '&#160;<font face="webdings">5</font>': '&#160;&#x25B4;';
                        this.appendChild(sortrevind);
                        return;
                    }
                    if (this.className.search(/\bsorttable_sorted_reverse\b/) != -1) {
                        // if we're already sorted by this column in reverse, just 
                        // re-reverse the table, which is quicker
                        sorttable.reverse(this.sorttable_tbody);
                        this.className = this.className.replace('sorttable_sorted_reverse', 'sorttable_sorted');
                        this.removeChild(document.getElementById('sorttable_sortrevind'));
                        sortfwdind = document.createElement('span');
                        sortfwdind.id = "sorttable_sortfwdind";
                        sortfwdind.innerHTML = stIsIE ? '&#160;<font face="webdings">6</font>': '&#160;&#x25BE;';
                        this.appendChild(sortfwdind);
                        return;
                    }
                    // remove sorttable_sorted classes
                    theadrow = this.parentNode;
                    forEach(theadrow.childNodes, function(cell) {
                        if (cell.nodeType == 1) {
                            // an element
                            cell.className = cell.className.replace('sorttable_sorted_reverse', '');
                            cell.className = cell.className.replace('sorttable_sorted', '');
                        }
                    });
                    sortfwdind = document.getElementById('sorttable_sortfwdind');
                    if (sortfwdind) {
                        sortfwdind.parentNode.removeChild(sortfwdind);
                    }
                    sortrevind = document.getElementById('sorttable_sortrevind');
                    if (sortrevind) {
                        sortrevind.parentNode.removeChild(sortrevind);
                    }
                    this.className += ' sorttable_sorted';
                    sortfwdind = document.createElement('span');
                    sortfwdind.id = "sorttable_sortfwdind";
                    sortfwdind.innerHTML = stIsIE ? '&#160;<font face="webdings">6</font>': '&#160;&#x25BE;';
                    this.appendChild(sortfwdind);
                    // build an array to sort. This is a Schwartzian transform thing,
                    // i.e., we "decorate" each row with the actual sort key,
                    // sort based on the sort keys, and then put the rows back in order
                    // which is a lot faster because you only do getInnerText once per row
                    row_array = [];
                    col = this.sorttable_columnindex;
                    rows = this.sorttable_tbody.rows;
                    for (var j = 0; j < rows.length; j ++ ) {
                        row_array[row_array.length] = [sorttable.getInnerText(rows[j].cells[col]), rows[j]];
                    }
/* If you want a stable sort, uncomment the following line */
                    
                    //sorttable.shaker_sort(row_array, this.sorttable_sortfunction);
                    
/* and comment out this one */
                    row_array.sort(this.sorttable_sortfunction);
                    tb = this.sorttable_tbody;
                    for (var j = 0; j < row_array.length; j ++ ) {
                        tb.appendChild(row_array[j][1]);
                    }
                    delete row_array;
                });
            }
        }
    },
    findActiveBody: function(table) {
        if (table == undefined || table == null)
            alert('HER');
        if (table.tBodies.length == 0)
            alert('HER2');
        for (var i = 0; i < table.tBodies.length; i ++ ) {
            if (table.tBodies[i].style.display == 'none') {
                continue;
            } else {
                //alert(i + ' ' + table.tBodies.length);
                return table.tBodies[i];
            }
        }
    },
    guessType: function(table, column) {
        // guess the type of a column based on its first non-blank row
        sortfn = sorttable.sort_alpha;
        for (var i = 0; i < table.tBodies[0].rows.length; i ++ ) {
            text = sorttable.getInnerText(table.tBodies[0].rows[i].cells[column]);
            if (text != '') {
                if (text.match(/^-?[£$¤]?[\d,.]+%?$/)) {
                    return sorttable.sort_numeric;
                }
                // check for a date: dd/mm/yyyy or dd/mm/yy 
                // can have / or . or - as separator
                // can be mm/dd as well
                possdate = text.match(sorttable.DATE_RE)
                    if (possdate) {
                    // looks like a date
                    first = parseInt(possdate[1]);
                    second = parseInt(possdate[2]);
                    if (first > 12) {
                        // definitely dd/mm
                        return sorttable.sort_ddmm;
                    } else if (second > 12) {
                        return sorttable.sort_mmdd;
                    } else {
                        // looks like a date, but we can't tell which, so assume
                        // that it's dd/mm (English imperialism!) and keep looking
                        sortfn = sorttable.sort_ddmm;
                    }
                }
            }
        }
        return sortfn;
    },
    getInnerText: function(node) {
        // gets the text we want to use for sorting for a cell.
        // strips leading and trailing whitespace.
        // this is *not* a generic getInnerText function; it's special to sorttable.
        // for example, you can override the cell text with a customkey attribute.
        // it also gets .value for <input> fields.
        hasInputs = (typeof node.getElementsByTagName == 'function') && node.getElementsByTagName('input').length;
        if (node.getAttribute("sorttable_customkey") != null) {
            return node.getAttribute("sorttable_customkey");
        } else if (typeof node.textContent != 'undefined' && !hasInputs) {
            return node.textContent.replace(/^\s+|\s+$/g, '');
        } else if (typeof node.innerText != 'undefined' && !hasInputs) {
            return node.innerText.replace(/^\s+|\s+$/g, '');
        } else if (typeof node.text != 'undefined' && !hasInputs) {
            return node.text.replace(/^\s+|\s+$/g, '');
        } else {
            switch(node.nodeType) {
                case 3: if (node.nodeName.toLowerCase() == 'input') {
                    return node.value.replace(/^\s+|\s+$/g, '');
                }
                case 4: return node.nodeValue.replace(/^\s+|\s+$/g, '');
                break;
                case 1: case 11: var innerText = '';
                for (var i = 0; i < node.childNodes.length; i ++ ) {
                    innerText += sorttable.getInnerText(node.childNodes[i]);
                }
                return innerText.replace(/^\s+|\s+$/g, '');
                break;
                default: return '';
            }
        }
    },
    reverse: function(tbody) {
        // reverse the rows in a tbody
        newrows = [];
        for (var i = 0; i < tbody.rows.length; i ++ ) {
            newrows[newrows.length] = tbody.rows[i];
        }
        for (var i = newrows.length - 1; i >= 0; i -- ) {
            tbody.appendChild(newrows[i]);
        }
        delete newrows;
    },
    sort_numeric: function(a, b) {
        aa = parseFloat(a[0].replace(/[^0-9.-]/g, ''));
        if (isNaN(aa))
            aa = 0;
        bb = parseFloat(b[0].replace(/[^0-9.-]/g, ''));
        if (isNaN(bb))
            bb = 0;
        return aa - bb;
    },
    sort_alpha: function(a, b) {
        if (a[0].toLowerCase() == b[0].toLowerCase())
            return 0;
        if (a[0].toLowerCase() < b[0].toLowerCase())
            return - 1;
        return 1;
    },
    sort_ddmm: function(a, b) {
        mtch = a[0].match(sorttable.DATE_RE);
        y = mtch[3];
        m = mtch[2];
        d = mtch[1];
        if (m.length == 1)
            m = '0' + m;
        if (d.length == 1)
            d = '0' + d;
        dt1 = y + m + d;
        mtch = b[0].match(sorttable.DATE_RE);
        y = mtch[3];
        m = mtch[2];
        d = mtch[1];
        if (m.length == 1)
            m = '0' + m;
        if (d.length == 1)
            d = '0' + d;
        dt2 = y + m + d;
        if (dt1 == dt2)
            return 0;
        if (dt1 < dt2)
            return - 1;
        return 1;
    },
    sort_mmdd: function(a, b) {
        mtch = a[0].match(sorttable.DATE_RE);
        y = mtch[3];
        d = mtch[2];
        m = mtch[1];
        if (m.length == 1)
            m = '0' + m;
        if (d.length == 1)
            d = '0' + d;
        dt1 = y + m + d;
        mtch = b[0].match(sorttable.DATE_RE);
        y = mtch[3];
        d = mtch[2];
        m = mtch[1];
        if (m.length == 1)
            m = '0' + m;
        if (d.length == 1)
            d = '0' + d;
        dt2 = y + m + d;
        if (dt1 == dt2)
            return 0;
        if (dt1 < dt2)
            return - 1;
        return 1;
    },
    shaker_sort: function(list, comp_func) {
        var b = 0;
        var t = list.length - 1;
        var swap = true;
        while (swap) {
            swap = false;
            for (var i = b; i < t; ++ i) {
                if (comp_func(list[i], list[i + 1]) > 0) {
                    var q = list[i];
                    list[i] = list[i + 1];
                    list[i + 1] = q;
                    swap = true;
                }
            }
            // for
            t -- ;
            if ( ! swap)
                break;
            for (var i = t; i > b; -- i) {
                if (comp_func(list[i], list[i - 1]) < 0) {
                    var q = list[i];
                    list[i] = list[i - 1];
                    list[i - 1] = q;
                    swap = true;
                }
            }
            // for
            b ++ ;
        }
        // while(swap)
        
    }
};
/* for Mozilla/Opera9 */
if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", sorttable.init, false);
}

/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) {
    // sniff
    var _timer = setInterval(function() {
        if (/loaded|complete/.test(document.readyState)) {
            sorttable.init();
            // call the onload handler
            
        }
    }, 10);
}
/* for other browsers */
window.onload = sorttable.init;
function dean_addEvent(element, type, handler) {
    if (element.addEventListener) {
        element.addEventListener(type, handler, false);
    } else {
        // assign each event handler a unique ID
        if ( ! handler.$$guid)
            handler.$$guid = dean_addEvent.guid ++ ;
        // create a hash table of event types for the element
        if ( ! element.events)
            element.events = {};
        // create a hash table of event handlers for each element/event pair
        var handlers = element.events[type];
        if ( ! handlers) {
            handlers = element.events[type] = {};
            // store the existing event handler (if there is one)
            if (element["on" + type]) {
                handlers[0] = element["on" + type];
            }
        }
        // store the event handler in the hash table
        handlers[handler.$$guid] = handler;
        // assign a global event handler to do all the work
        element["on" + type] = handleEvent;
    }
};
// a counter used to create unique IDs
dean_addEvent.guid = 1;
function removeEvent(element, type, handler) {
    if (element.removeEventListener) {
        element.removeEventListener(type, handler, false);
    } else {
        // delete the event handler from the hash table
        if (element.events && element.events[type]) {
            delete element.events[type][handler.$$guid];
        }
    }
};
function handleEvent(event) {
    var returnValue = true;
    // grab the event object (IE uses a global event object)
    event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
    // get a reference to the hash table of event handlers
    var handlers = this.events[event.type];
    // execute each event handler
    for (var i in handlers) {
        this.$$handleEvent = handlers[i];
        if (this.$$handleEvent(event) === false) {
            returnValue = false;
        }
    }
    return returnValue;
};
function fixEvent(event) {
    // add W3C standard event methods
    event.preventDefault = fixEvent.preventDefault;
    event.stopPropagation = fixEvent.stopPropagation;
    return event;
};
fixEvent.preventDefault = function() {
    this.returnValue = false;
};
fixEvent.stopPropagation = function() {
    this.cancelBubble = true;
};
// array-like enumeration
if ( ! Array.forEach) {
    // mozilla already supports this
    Array.forEach = function(array, block, context) {
        for (var i = 0; i < array.length; i ++ ) {
            block.call(context, array[i], i, array);
        }
    };
}
// generic enumeration
Function.prototype.forEach = function(object, block, context) {
    for (var key in object) {
        if (typeof this.prototype[key] == "undefined") {
            block.call(context, object[key], key, object);
        }
    }
};
// character enumeration
String.forEach = function(string, block, context) {
    Array.forEach(string.split(""), function(chr, index) {
        block.call(context, chr, index, string);
    });
};
// globally resolve forEach enumeration
var forEach = function(object, block, context) {
    if (object) {
        var resolve = Object;
        // default
        if (object instanceof Function) {
            // functions have a "length" property
            resolve = Function;
        } else if (object.forEach instanceof Function) {
            // the object implements a custom forEach method so use that
            object.forEach(block, context);
            return;
        } else if (typeof object == "string") {
            // the object is a string
            resolve = String;
        } else if (typeof object.length == "number") {
            // the object is array-like
            resolve = Array;
        }
        resolve.forEach(object, block, context);
    }
};