var mdatecalendars = new Array();
var ctime = null;
var ctimefrom = null;
var ctimeto = null;

function mdate(inputelm) {
    this.show = false;
    this.created = false;
    this.active = false;
    this.mdateactive = false;
    this.years = new Array();
    this.months = new Array();
    this.mdateelm_input = inputelm;
    this.mdateelm_container = null;
    this.mdateelm_msiepopup = null;
    this.mdateelm_datepicker = null;
    this.mdateelm_yearselect = null;
    this.mdateelm_monthselect = null;
    this.mdateelm_table = null;
    this.mdateelm_tbody = null;
    this.mdateelm_trows = new Array();
    this.mdateelm_tcells = new Array();
    this.hidetimeout = null;
    this.xwidth = 0;
    this.xheight = 0;
    
    this.datevalue = null;
    this.dateproposal = null;
    this.datestart = null;
    this.dateend = null;
    
    this.monthdays = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
    this.monthnames = new Array('January','February','March','April','May','June','July','August','September','October','November','December');
    this.daynames = new Array('Mon','Tue','Wed','Thu','Fri','Sat','Sun');
    
    var xhtml = document.getElementsByTagName('html')[0];
    if (xhtml.getAttribute('lang')) {
        if (xhtml.getAttribute('lang') == 'cs') {
            this.monthnames = new Array('Leden','Únor','Březen','Duben','Květen','Červen','Červenec','Srpen','Září','Říjen','Listopad','Prosinec');
            this.daynames = new Array('Po','Út','St','Čt','Pá','So','Ne');
        }
    }
    
    this.xcreateelement = function(context,type) {
        var result = false;
        if (context.createElementNS) {
            result = context.createElementNS('http://www.w3.org/1999/xhtml','html:'+type);
        } else {
            result = context.createElement(type);
        }
        return result;
    }
    
    this.xcreatetextnode = function(context,text) {
        return context.createTextNode(text);
    }
    
    this.setnewdate = function(obj,year,month,day) {
        obj.setHours(12,0,0,0);
        obj.setFullYear(year,month,day);
    }
    
    this.preparedates = function(obj) {
        var nowdate = new Date();
        obj.datevalue = new Date();
        obj.setnewdate(obj.datevalue,nowdate.getFullYear(),nowdate.getMonth(),nowdate.getDate());
        obj.dateproposal = new Date();
        obj.setnewdate(obj.dateproposal,nowdate.getFullYear(),nowdate.getMonth(),nowdate.getDate());
        obj.datestart = new Date();
        obj.setnewdate(obj.datestart,1970,0,1);
        obj.dateend = new Date();
        obj.setnewdate(obj.dateend,2038,0,19);
        if (obj.mdateelm_input.getAttribute('alt')) {
            var result = obj.mdateelm_input.getAttribute('alt').match(/(\d{1,2})\.(\d{1,2})\.(\d{4})\s*-\s*(\d{1,2})\.(\d{1,2})\.(\d{4})/);
            if(result) {
                obj.setnewdate(obj.datestart,result[3],result[2]-1,result[1]);
                obj.setnewdate(obj.dateend,result[6],result[5]-1,result[4]);
                if (obj.datestart>obj.dateend) {
                    obj.setnewdate(obj.datestart,result[6],result[5]-1,result[4]);
                    obj.setnewdate(obj.dateend,result[3],result[2]-1,result[1]);
                }
            }
        }
        result = obj.mdateelm_input.value.match(/(\d{1,2})\.(\d{1,2})\.(\d{4})/);
        if(result) {
            obj.setnewdate(obj.dateproposal,result[3],result[2]-1,result[1]);
        }
        if (obj.dateproposal<obj.datestart) {
            obj.setnewdate(obj.dateproposal,obj.datestart.getFullYear(),obj.datestart.getMonth(),obj.datestart.getDate());
        }
        else if (obj.dateproposal>obj.dateend) {
            obj.setnewdate(obj.dateproposal,obj.dateend.getFullYear(),obj.dateend.getMonth(),obj.dateend.getDate());
        }
        obj.setnewdate(obj.datevalue,obj.dateproposal.getFullYear(),obj.dateproposal.getMonth(),obj.dateproposal.getDate());
    }
    
    this.showmdate = function() {
        obj = this.mdate;
        if (obj.hidetimeout != null) {
            window.clearTimeout(obj.hidetimeout);
        }
        obj.hidetimeout = null;
        if (!obj.active) {
            for (var i=0;i<mdatecalendars.length;i++) {
                if (mdatecalendars[i].active) {
                    mdatecalendars[i].hidemdate(mdatecalendars[i]);
                }
            }
            obj.mdateelm_container.style.display = 'block';
            obj.mdateelm_container.style.visibility = 'visible';
            if (obj.mdateelm_msiepopup != null) {
                obj.xwidth = obj.mdateelm_container.offsetWidth;
                obj.mdateelm_msiepopup.document.body.style.background = '#FFFFFF';
                obj.mdateelm_msiepopup.show(0,0,obj.xwidth,0,obj.mdateelm_container);
                obj.mdateelm_table.style.width = (obj.xwidth-2)+'px';
                obj.xheight = obj.mdateelm_msiepopup.document.body.scrollHeight;
                obj.mdateelm_msiepopup.hide()
                obj.mdateelm_container.style.height = obj.xheight+'px';
                obj.mdateelm_msiepopup.show(0,0,obj.xwidth,obj.xheight,obj.mdateelm_container);
                obj.mdateelm_msiepopup.document.focus();
            }
            obj.active = true;
        }
    }

    this.hidemdate = function(obj) {
        obj.hidetimeout = null;
        if (obj.active) {
            if(!obj.mdateactive) {
                obj.active = false;
                obj.mdateelm_container.style.display = 'none';
                obj.mdateelm_container.style.visibility = 'hidden';
                if (obj.mdateelm_msiepopup != null) {
                    obj.mdateelm_msiepopup.hide();
                }
            }
        }
    }
    
    this.hidemdatetimeout = function(){
        obj = this.mdate;
        if (obj.active) {
            if(!obj.mdateactive) {
                window.mdate = obj;
                obj.hidetimeout = window.setTimeout('this.mdate.hidemdate(obj);',500);
            }
        }
    }
    
    this.selectactivated = function() {
        obj = this.parentNode.mdate;
        obj.mdateactive = true;
    }
    
    this.selectdeactivated = function() {
        obj = this.parentNode.mdate;
        obj.mdateactive = false;
    }
    
    this.changeyear = function() {
        obj = this.parentNode.mdate;
        obj.mdateactive = false;
        obj.setnewdate(obj.dateproposal,this.value,obj.datevalue.getMonth(),obj.datevalue.getDate());
        obj.redrawmdate(obj);
    }
    
    this.changemonth = function() {
        obj = this.parentNode.mdate;
        obj.mdateactive = false;
        obj.setnewdate(obj.dateproposal,obj.datevalue.getFullYear(),this.value-1,obj.datevalue.getDate());
        obj.redrawmdate(obj);
    }
    
    this.changeday = function() {
        obj = this.parentNode.parentNode.parentNode.parentNode.mdate;
        obj.mdateactive = false;
        obj.setnewdate(obj.dateproposal,obj.datevalue.getFullYear(),obj.datevalue.getMonth(),this.firstChild.nodeValue);
        obj.redrawmdate(obj);
    }
    
    this.redrawmdate = function(obj) {
        if (obj.dateproposal<obj.datestart) {
            obj.setnewdate(obj.dateproposal,obj.datestart.getFullYear(),obj.datestart.getMonth(),obj.datestart.getDate());
        }
        else if (obj.dateproposal>obj.dateend) {
            obj.setnewdate(obj.dateproposal,obj.dateend.getFullYear(),obj.dateend.getMonth(),obj.dateend.getDate());
        }
        obj.setnewdate(obj.datevalue,obj.dateproposal.getFullYear(),obj.dateproposal.getMonth(),obj.dateproposal.getDate());
        var day = ''+obj.datevalue.getDate();
        if (day.length == 1) {
            day = '0'+day;
        }
        var month = ''+(obj.datevalue.getMonth()+1);
        if (month.length == 1) {
            month = '0'+month;
        }
        obj.mdateelm_input.value = day+'.'+month+'.'+obj.datevalue.getFullYear();
        
        var trows = obj.mdateelm_trows.length;
        obj.drawtablebody(obj);
        obj.mdateelm_monthselect.selectedIndex = obj.datevalue.getMonth();
        if (trows != obj.mdateelm_trows.length) {
            if (obj.mdateelm_msiepopup != null) {
                if (obj.active) {
                    obj.mdateelm_msiepopup.hide();
                    obj.mdateelm_msiepopup.show(0,0,obj.xwidth,0,obj.mdateelm_container);
                    obj.xheight = obj.mdateelm_msiepopup.document.body.scrollHeight;
                    obj.mdateelm_msiepopup.hide();
                    obj.mdateelm_container.style.height = obj.xheight+'px';
                    obj.mdateelm_msiepopup.show(0,0,obj.xwidth,obj.xheight,obj.mdateelm_container);
                }
            }
        }
    }
    
    this.tdmouseover = function() {
         if (this.mdateselected) {
            this.className = 'activeselectedhover';
        } else {
            this.className = 'activehover';
        }
    }
    
    this.tdmouseout = function() {
        if (this.mdateselected) {
            this.className = 'activeselected';
        } else {
            this.className = 'active';
        }
    }
    
    this.drawtablebody = function(obj) {
        obj.mdateelm_trows = new Array();
        obj.mdateelm_tcells = new Array();
        
        if (obj.mdateelm_tbody) {
            obj.mdateelm_table.removeChild(obj.mdateelm_tbody);
        }
        
        obj.mdateelm_tbody = obj.xcreateelement(obj.createcontext,'tbody');
        obj.mdateelm_table.appendChild(obj.mdateelm_tbody);
        obj.mdateelm_trows[0] = obj.xcreateelement(obj.createcontext,'tr');
        obj.mdateelm_tbody.appendChild(obj.mdateelm_trows[0]);
        obj.mdateelm_tcells[0] = new Array();
        for (i=0;i<obj.daynames.length;i++) {
            obj.mdateelm_tcells[0][i] = obj.xcreateelement(obj.createcontext,'th');
            obj.mdateelm_tcells[0][i].appendChild(obj.xcreatetextnode(obj.createcontext,obj.daynames[i]));
            obj.mdateelm_trows[0].appendChild(obj.mdateelm_tcells[0][i]);
        }
        
        var actmonthdays = obj.monthdays[obj.datevalue.getMonth()];
        if (obj.datevalue.getMonth()==1) {
            if ((obj.datevalue.getFullYear()%4 == 0)&&(obj.datevalue.getFullYear()%100 != 0)||(obj.datevalue.getFullYear()%400 == 0)) {
                actmonthdays = 29;
            }
        }

        var monthday = 1;
        var tablecellindex = 0;
        var rowcellindex = 0;
        var trindex = 0;
        var dateinmonth = new Date();
        while (monthday <= actmonthdays) {
            rowcellindex = tablecellindex%7;
            trindex = 1+Math.floor(tablecellindex/7);
            obj.setnewdate(dateinmonth,obj.datevalue.getFullYear(),obj.datevalue.getMonth(),monthday);
            if (rowcellindex == 0) {
                obj.mdateelm_trows[trindex] = obj.xcreateelement(obj.createcontext,'tr');
                obj.mdateelm_tbody.appendChild(obj.mdateelm_trows[trindex]);
                obj.mdateelm_tcells[trindex] = new Array();
            }
            if (monthday == 1) {
                var monthstartday = dateinmonth.getDay();
                if (monthstartday == 0) {
                    monthstartday = 7;
                }
                for (i=1;i<monthstartday;i++) {
                    rowcellindex = tablecellindex%7;
                    obj.mdateelm_tcells[trindex][rowcellindex] = obj.xcreateelement(obj.createcontext,'td');
                    obj.mdateelm_trows[trindex].appendChild(obj.mdateelm_tcells[trindex][rowcellindex]);
                    tablecellindex++;
                }
            }
            
            obj.mdateelm_tcells[trindex][rowcellindex] = obj.xcreateelement(obj.createcontext,'td');

            if ((dateinmonth>=obj.datestart)&&(dateinmonth<=obj.dateend)) {
                obj.mdateelm_tcells[trindex][rowcellindex].className = 'active';
                if (monthday == obj.datevalue.getDate()) {
                    obj.mdateelm_tcells[trindex][rowcellindex].mdateselected = true;
                    obj.mdateelm_tcells[trindex][rowcellindex].className = 'activeselected';
                }
                obj.mdateelm_tcells[trindex][rowcellindex].onmouseover = obj.tdmouseover;
                obj.mdateelm_tcells[trindex][rowcellindex].onmouseout = obj.tdmouseout;
                obj.mdateelm_tcells[trindex][rowcellindex].onclick = obj.changeday;            }
            
            obj.mdateelm_tcells[trindex][rowcellindex].appendChild(obj.xcreatetextnode(obj.createcontext,monthday));
            obj.mdateelm_trows[trindex].appendChild(obj.mdateelm_tcells[trindex][rowcellindex]);
            
            if (monthday == actmonthdays) {
                var monthendday = dateinmonth.getDay();
                if (monthendday == 0) {
                    monthendday = 7;
                }
                monthendday++;
                for (i=monthendday;i<=7;i++) {
                    rowcellindex = tablecellindex%7;
                    obj.mdateelm_tcells[trindex][rowcellindex] = obj.xcreateelement(obj.createcontext,'td');
                    obj.mdateelm_trows[trindex].appendChild(obj.mdateelm_tcells[trindex][rowcellindex]);
                    tablecellindex++;
                }
            }
            monthday++;
            tablecellindex++;
        }
    }
    
    this.drawyears = function(obj) {
    
        if (obj.mdateelm_yearselect) {
            obj.mdateelm_datepicker.removeChild(obj.mdateelm_yearselect);
        }

        obj.mdateelm_yearselect = obj.xcreateelement(obj.createcontext,'select');
        obj.mdateelm_yearselect.onchange = obj.changeyear;
        obj.mdateelm_yearselect.onfocus = obj.selectactivated;
        obj.mdateelm_yearselect.onblur = obj.selectdeactivated;
        
        if (obj.mdateelm_table) {
            obj.mdateelm_datepicker.insertBefore(obj.mdateelm_yearselect,obj.mdateelm_table);
        } else {
            obj.mdateelm_datepicker.appendChild(obj.mdateelm_yearselect);
        }
        
        for (i=obj.datestart.getFullYear();i<=obj.dateend.getFullYear();i++) {
            obj.years[i] = obj.xcreateelement(obj.createcontext,'option');
            obj.years[i].appendChild(obj.xcreatetextnode(obj.createcontext,i));
            obj.years[i].value = i;
            if (obj.datevalue.getFullYear()==i) {
                obj.years[i].selected = true;
            }
            obj.mdateelm_yearselect.appendChild(obj.years[i]);
        }
    }

    this.create = function()  {
        if (!this.created) {
            if (this.mdateelm_input != null) {
            
                this.preparedates(this);
                
                this.createcontext = document;
                if (isIEBug()) {
                    this.mdateelm_msiepopup = window.createPopup();
                    this.mdateelm_msiepopup.document.createStyleSheet('/xchen.css');
                    this.createcontext = this.mdateelm_msiepopup.document;
                }
                
                //this.mdateelm_input.disabled = true;
                this.mdateelm_input.color = '#000000';
                this.mdateelm_input.mdate = this;
                if (this.mdateelm_msiepopup == null) {
                    this.mdateelm_input.onmouseover = this.showmdate;
                    this.mdateelm_input.onmouseout = this.hidemdatetimeout;
                } else {
                    this.mdateelm_input.onclick = this.showmdate;
                }
                this.mdateelm_input.onfocus = this.showmdate;
                if (this.mdateelm_input.style.cursor) {
                    this.mdateelm_input.style.cursor = 'pointer';
                }
                
                this.mdateelm_container = this.xcreateelement(document,'div');
                this.mdateelm_container.mdate = this;
                this.mdateelm_container.style.position = 'absolute';
                this.mdateelm_container.style.zIndex = '1000';
                this.mdateelm_container.style.top = (this.mdateelm_input.offsetTop+this.mdateelm_input.offsetHeight-1)+'px';
                this.mdateelm_container.style.left = this.mdateelm_input.offsetLeft+'px';
                this.mdateelm_container.className = 'mdatecontainer';
                this.mdateelm_container.style.display = 'none';
                this.mdateelm_container.style.visibility = 'hidden';
                this.mdateelm_input.parentNode.insertBefore(this.mdateelm_container,this.mdateelm_input);

                this.mdateelm_datepicker = this.xcreateelement(this.createcontext,'div');
                this.mdateelm_datepicker.className = 'mdate';
                this.mdateelm_datepicker.mdate = this;
                
                if (this.mdateelm_msiepopup == null) {
                    this.mdateelm_datepicker.onmouseover = this.showmdate;
                    this.mdateelm_datepicker.onmouseout = this.hidemdatetimeout;
                    this.mdateelm_container.appendChild(this.mdateelm_datepicker);
                } else {
                    this.mdateelm_msiepopup.document.body.mdate = this;
                    this.mdateelm_msiepopup.document.body.appendChild(this.mdateelm_datepicker);
                }
                
                this.mdateelm_monthselect = this.xcreateelement(this.createcontext,'select');
                for (i=0;i<this.monthnames.length;i++) {
                    this.months[i] = this.xcreateelement(this.createcontext,'option');
                    this.months[i].appendChild(this.xcreatetextnode(this.createcontext,this.monthnames[i]));
                    this.months[i].value = i+1;
                    if (this.datevalue.getMonth()==i) {
                        this.months[i].selected = true;
                    }
                    this.mdateelm_monthselect.appendChild(this.months[i]);
                }
                this.mdateelm_monthselect.onchange = this.changemonth;
                this.mdateelm_monthselect.onfocus = this.selectactivated;
                this.mdateelm_monthselect.onblur = this.selectdeactivated;
                this.mdateelm_datepicker.appendChild(this.mdateelm_monthselect);

                this.drawyears(this);
                
                this.mdateelm_table = this.xcreateelement(this.createcontext,'table');
                this.mdateelm_datepicker.appendChild(this.mdateelm_table);

                this.redrawmdate(this);
                this.created = true;
            }
        }
    }
    
    this.create();
}


function mdateinit() {
    if (!isIE5()) {
        this.xinputs = document.getElementsByTagName('input');
        var j=0;
        for(var i=0;i<this.xinputs.length;i++) {
            if(this.xinputs[i].className == 'mdateinput')  {
                mdatecalendars[j] = new mdate(this.xinputs[i]);
                j++;
            }
        }
    }
    /* reg specific */
    ctime = document.getElementById('in_course');
    ctime.onchange = changeCTimeDates;
    ctimefrom = document.getElementById('in_ctimefrom');
    ctimeto = document.getElementById('in_ctimeto');
}

function changeCTimeDates() {
    var result = this.options[this.selectedIndex].firstChild.nodeValue.match(/(\d{1,2})\.(\d{1,2})\.(\d{4})\s*-\s*(\d{1,2})\.(\d{1,2})\.(\d{4})/);
    if(result) {
        ctimefrom.value = result[1]+'.'+result[2]+'.'+result[3];
        ctimefrom.setAttribute('alt',result[0]);
        ctimeto.value = result[4]+'.'+result[5]+'.'+result[6];
        ctimeto.setAttribute('alt',result[0]);
    } else {
        var nowdate = new Date();
        var nowdatestr = nowdate.getDate()+'.'+(nowdate.getMonth()+1)+'.'+nowdate.getFullYear();
        ctimefrom.value = nowdatestr;
        ctimefrom.setAttribute('alt','');
        ctimeto.value = nowdatestr;
        ctimeto.setAttribute('alt','');
    }
    ctimefrom.mdate.preparedates(ctimefrom.mdate);
    ctimefrom.mdate.redrawmdate(ctimefrom.mdate);
    ctimefrom.mdate.drawyears(ctimefrom.mdate);
    ctimeto.mdate.preparedates(ctimeto.mdate);
    ctimeto.mdate.redrawmdate(ctimeto.mdate);
    ctimeto.mdate.drawyears(ctimeto.mdate);
}

function isIEBug() {
    var agt=navigator.userAgent.toLowerCase();
    var is_major = parseInt(navigator.appVersion);
    var is_ie = ((agt.indexOf('msie') != -1) && (agt.indexOf('opera') == -1));
    var is_ie67 = (is_ie && ((agt.indexOf('msie 5.5') != -1)||(agt.indexOf('msie 6') != -1)||(agt.indexOf('msie 7') != -1)||(agt.indexOf('msie 8') != -1)));
    return is_ie67;
}

function isIE5() {
    var agt=navigator.userAgent.toLowerCase();
    var is_major = parseInt(navigator.appVersion);
    var is_ie = ((agt.indexOf('msie') != -1) && (agt.indexOf('opera') == -1));
    var is_ie5 = (is_ie && (agt.indexOf('msie 5.5') == -1)&&(agt.indexOf('msie 6') == -1)&&(agt.indexOf('msie 7') == -1)&&(agt.indexOf('msie 8') == -1));
    return is_ie5;
}

function addEvent(obj, evType, fn){
    if (obj.addEventListener){
        obj.addEventListener(evType, fn, false);
        return true;
    } else if (obj.attachEvent){
        var r = obj.attachEvent("on"+evType, fn);
        return r;
    } else {
        return false;
    }
}

addEvent(window,'load',mdateinit);


/* reg specific functions */