function get_obj(objectId) {
	if(document.getElementById && document.getElementById(objectId)) {
		return document.getElementById(objectId);
	} else if (document.all && document.all(objectId)) {
		return document.all(objectId);
	} else if (document.layers && document.layers[objectId]) {
		return document.layers[objectId];
	} else {
		return false;
	}
}
function calendar_init(y) {
	r = 5;
	y0 = y - r;
	y1 = y + r + 1;
	for (i = y0; i < y1; i++) {
		document.write('<option value="'+i+'">'+i+'</option>');
	}
}
function calendar_redirect() {
    var ptr = get_obj("ical");
    ptr = ptr.options[ptr.selectedIndex].value;
	ptr = "/calendar_turn_" + get_obj("year").value + "_" + get_obj("month").value + ".html" + (ptr>0?"&ical=":"") + (ptr>0?ptr:"");
    window.location = ptr;
}
function submit_form(obj_id){
    var obj = get_obj(obj_id);
    obj.submit();
    return false;
}
/* ajax */
// Copyright © 2005 ADevel.com ( https://adevel.com/ )
// Author: Kirill Chernyshov ( chk@adevel.com )
var ajaxIsIE = false;

/**
 *    success_handler = function(response_text, response_xml);
 *    error_handler = function();
 *
 */

// Calls success_handler() if src_url loaded successfully. 
// Otherwise error_handler() if specified
// ajaxRequest

function aarq( src_url, success_handler, error_handler ){
    var req = null;
    if (!src_url)
        return false;
    if (window.XMLHttpRequest)
        req = new XMLHttpRequest();
    else{
        if (window.ActiveXObject){
            ajaxIsIE = true;
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    
    if (req) {
        req.onreadystatechange = function(){
            if (req.readyState == 4) {
                try{
                    if (req.status == 200) {
                        if (success_handler){
                            success_handler(req.responseText, req.responseXML);
                        } else {
                            aadp( req.responseXML );
                        }
                    } else {
                        if(error_handler){
                            error_handler();
                        }
                    }
                }
                finally{}
            }
        };
        req.open( 'GET', src_url, true);            
        req.send('');
    }
    return false;
}

//Submits the form with specified id using its 'method' and 'action' properties.
// submission url could be replaced with custom_url
// if form is submitted successfully, success_handler() will be called, 
// on error - error_handler()
// If request returned the XML content and success_handler is not specified,
// the default XML parsed would be called (ajaxDefaultXMLParser)
// ajaxSubmitForm
function aasf( form_id, custom_url, success_handler, error_handler ){
    var req = null;
    var frm = document.getElementById( form_id );
    var url = '';
    var method = 'get';
    
    if ( !frm )
        return false;   
    if( !custom_url ) {
        if(frm.action ) 
            url = frm.action;
    }
    else{
        url = custom_url;
    }
    
    if( url == '' )  
        return false;
    if( frm.method )
        method = frm.method;
    
    var params = aacp( form_id )+'&ajax_submit=true';
    
    if (window.XMLHttpRequest)
        req = new XMLHttpRequest();
    else {
        if (window.ActiveXObject){
            ajaxIsIE = true;
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    
    if (req) {
        req.onreadystatechange = function(){
            if (req.readyState == 4) {
                try{
                    if (req.status == 200) {
                        if(success_handler)
                            success_handler(req.responseText, req.responseXML);
                        else{
                            if( req.responseXML )
                                aadp( req.responseXML );
                        }
                    } else {
                        if(error_handler)
                            error_handler();
                    }
                }
                finally{
                    aaec( form_id );
                }
            }
        };
        
        if(method.toLowerCase() == 'get'){
            req.open('get', url+'?'+params, true );            
            req.send('');
        }
        else{
            req.open('post', url, true );            
            req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
            req.send(params);
        }
        aadc( form_id );
    }
    return true;
}

// the Default XML Response Parser
// XML must contail the toplevel item 'elements' that soud consist of 
// subitems with html ids as tagnames. Every id tag may contain one 
// of the following nodes:
// a) innerHTML; 
// aa) innerHTMLPrepend;
// ab) innerHTMLAppend;
// b) value; 
// c) src; 
// d) className;
// e) checked;
// This nodes specify the corresponding properties of the html element.
// ajaxDefaultXMLParser
function aadp( xml_response ){
    // TODO: just implement it ;)
    if(!xml_response)
        return false;
    
    // go through item ids
    var _elements;
    try{_elements= xml_response.getElementsByTagName("elements")[0];}
        catch(e){return false;  }
    if( _elements ){
        var i, _src, _innerHTML, _innerHTMLPrepend, _innerHTMLAppend, _value, _className, xml_item, _eval;
        for(i=0; i<_elements.childNodes.length; i++){
            xml_item = _elements.childNodes[i];
            html_item = document.getElementById( xml_item.nodeName );
            if(html_item){
                _src = xml_item.getElementsByTagName("src")[0];
                if(_src)
                    try{ html_item.src = aagn( null, 'src', xml_item, 0); }finally{}                    
                    
                _value = xml_item.getElementsByTagName("value")[0];
                if(_value)
                    try{ html_item.value = aagn( null, 'value', xml_item, 0); }finally{}
                    
                _innerHTML = xml_item.getElementsByTagName("innerHTML")[0];
                if(_innerHTML)
                    try{ html_item.innerHTML = aagn( null, 'innerHTML', xml_item, 0); }finally{}
                    
                _innerHTMLPrepend = xml_item.getElementsByTagName("innerHTMLPrepend")[0];
                if(_innerHTMLPrepend)
                    try{ html_item.innerHTML = aagn( null, 'innerHTMLPrepend', xml_item, 0) + html_item.innerHTML; }finally{}
                                        
                _innerHTMLAppend = xml_item.getElementsByTagName("innerHTMLAppend")[0];
                if(_innerHTMLAppend)
                    try{ html_item.innerHTML = html_item.innerHTML + aagn( null, 'innerHTMLAppend', xml_item, 0); }finally{}
                    
                _className = xml_item.getElementsByTagName("className")[0];
                if(_className)
                    try{ html_item.className = aagn( null, 'className', xml_item, 0); }finally{}
                    
                _checked = xml_item.getElementsByTagName("checked")[0];
                if(_checked)
                    try{ html_item.checked = aagn( null, 'checked', xml_item, 0); }finally{}
            }
            _eval = xml_item.getElementsByTagName("eval")[0];
            if(_eval)
                try{ eval(aagn( null, 'eval', xml_item, 0)); }finally{}
        }
    }
    
    return true;
}

// explicitly replaces the content of specified HTML element with result of requesting src_url
// ajaxSetContent
function aasn(element_id, src_url){
    var callback = function(response_text, response_xml){aafc( element_id, response_text);};
    return aarq( src_url, callback);
}

// eSimilar to aasn, but replaces form field value
// ajaxSetValue
function aasv(element_id, src_url){
    var callback = function(response_text, response_xml){aafv( element_id, response_text);};
    return aarq( src_url, callback);
}


// represents form params as a string
// supports text, textarea, radiobuttons, select (not multiple), checkboxes.. 
// ajaxComposeParams
function aacp( form_id ){
    var j;
    var val;
    var elem;
    var res = '';
    if(!form_id)
        return res;     
    var frm = document.getElementById( form_id );
    if(frm)
        for(var i=0; i<frm.elements.length; i++){
            if(res != '')
                res+='&';
            if(frm.elements[i].type == 'checkbox'){
                if(!frm.elements[i].checked)continue;
            }
            if(frm.elements[i].type == 'radio'){
                elem = frm.elements[frm.elements[i].name];
                val = 'null';
                for(j=0; j < elem.length; j++){
                    if(elem[j].checked)
                        val = elem[j].value;
                }
                res+=frm.elements[i].name+'='+val;
            }
            else{
                res+=frm.elements[i].name+'='+encodeURIComponent(frm.elements[i].value);
            }
        }
    return res;
}

// retrieves the content of XML item 'prefix:local[index]' of the parent item as a text.
// returns empty string on failure.
// getNodeText
function aagn(prefix, local, parentElem, index) {
    try{
        var res = "";
        if (prefix && ajaxIsIE) {
            res = parentElem.getElementsByTagName(prefix + ":" + local)[index];
        } else {
            res = parentElem.getElementsByTagName(local)[index];
        }
        if (res) {
            if (res.childNodes.length > 1) {
                return res.childNodes[1].nodeValue;
            } else {
                return res.firstChild.nodeValue;            
            }
        } else {
            return "";
        }
    }
    catch(e){
        return "";
    }
}

// disables all elements of form
// disableControls
function aadc( form_id ){
    var frm = document.getElementById(form_id);
    if(frm)
        for(var i=0; i<frm.elements.length; i++){
            frm.elements[i].disabled = true;
        }
}

// enables all form elements
// enableControls
function aaec( form_id ){
    var frm = document.getElementById(form_id);
    if(frm)
        for(var i=0; i<frm.elements.length; i++){
            frm.elements[i].disabled = false;
        }
}

// sets the innerHTML property of specified element
// fillContent
function aafc( elem_id, new_val){
    var res = false;
    try{
        var elem = document.getElementById(elem_id);
        if (elem){
            elem.innerHTML = new_val;
            res = true;
        }
    }
    finally{}
    
    return res;
}

// sets the value property of form elemenet
// fillValue
function aafv( elem_id, new_val){
    var res = false;
    try{
        var elem = document.getElementById(elem_id);
        if (elem){
            elem.value = new_val;
            res = true;
        }
    }
    finally{}
    
    return res;
}
// gets the value of form element
// getValue
// camper@adevel.com
function aagv(form_id, elem_name){
    var res=false;
    try{
        if(!form_id){
            res=document.getElementById(elem_name).value;
        }else{
            form=document.getElementById(form_id);
            if(form){
                res=form.elements[elem_name].value;
            }
        }
    }
    finally{}
    return res;
}

// Get element by ID in all browsers
// jancha@adevel.com
function aagi( elem_id ){
    if(document.getElementById && document.getElementById(elem_id)) {
        return document.getElementById(elem_id);
    } else if (document.all && document.all(elem_id)) {
        return document.all(elem_id);
    } else if (document.layers && document.layers[elem_id]) {
        return document.layers[elem_id];
    } else {
        return false;
    }
}

function spinner_on(spinner, timeout){
    /* This function starts a spinning wheel */
    var s = document.getElementById(spinner);
    if(!s)return;
    if(s.src){
        /* seems to be img */
        s.src='amodules3/img/loading.gif';
    }else{
        s.innerHTML='<img src="amodules3/img/loading.gif" alt="loading">';
    }
    if(timeout == null)timeout=3000;
    if(timeout>0)setTimeout("spinner_off('"+spinner+"')",timeout);
}
function spinner_off(spinner){
    /* This function stops a spinning wheel */
    var s = document.getElementById(spinner);
    if(!s)return;
    if(s.src){
        /* seems to be img */
        s.src='amodules3/img/not_loading.gif';
    }else{
        s.innerHTML='<img src="amodules3/img/not_loading.gif" alt="loading">';
    }
}

function aaej(src_url, spinner, argument){
    if(spinner)spinner_on(spinner);
    var callback = function(response_text, response_xml){
        eval(response)
        aafc( element_id, response_text);
    };

    return aarq( src_url, callback);
}

function submitForm(form,spinner){
    var callback = function(response_text, response_xml){
        if(response_text){
            try {
                eval(response_text);
            }catch(e){
                w=window.open(null,null,'height=400,width=700,location=no,menubar=no,scrollbars=yes,status=no,titlebar=no,toolbar=no,resizable=yes');
                w.document.write('<h2>Error in AJAX response: '+e+'</h2>');
                w.document.write(response_text);
                w.document.write('<center><input type=button onclick="window.close()" value="Close"></center>');
            }
        }
        if(spinner)spinner_off(spinner);
    };
    return aasf(form,null,callback);
}

function key_handler(e) {
    var keynum;
    var keychar;
    var numcheck;
    if(window.event) {
        keynum = e.keyCode;
    } else if(e.which) {
        keynum = e.which;
    }
    if (keynum == 113){
        aarq('quickaccess.html&switch=true');
        window.location.reload(false);
        return false;
    } else if (keynum == 114){
        aarq('cachecontrol.html&switch=true');
        return false;
    }
    return true;
}

window.onkeydown = key_handler;