var tabs = new Array( "global", "specific" )
var subs = new Array( "audio", "recording", "book", "organ" )
var ress = new Array( "audio", "recording", "book", "song", "organ" )
var http_request = false
var currentTab = ""
var currentSub = ""
var currentRes = ""
var numberPerBatch = 20
var cookieName = "ismus_status"
var detailCookie = "ismus_detail"
var selectedGlobal = "global"
var doingFocus = false;
var counter = 0;
var defaultBtn = "audioBtn";
var debug = false;
var rows = new Array();
var rads = new Array();

var photos = new Array();
var audios = new Array();
var videos = new Array();
var mediaTabs = new Array( "ljosmyndir", "hljod", "myndskeid" );
var selectedMedia = "ljosmyndir";
var photoCounter = 0, photoMax, audioCounter = 0, audioMax, videoCounter = 0, videoMax;

var msie;
var isFrontpage = false;

function msg( txt ) {
	return;
    counter++;
    m = document.getElementById("msg");
    if ( m != undefined )
        m.innerHTML += counter+": " + txt + " <br /> ";
}

/* OGDetail logic */

function detailInit() {
	return;
    msg( "detailInit" );
    try {
        var tab = document.getElementById( "currentTab" ).value + "Tab";
        clickTab( document.getElementById( tab ) );
        var data = document.getElementById( "photos" );
        /* or maybe this mainPhoto stuff should be handled server side? */
        var mainPhoto = document.getElementById( "mainPhoto" ).innerHTML;
                
        data = document.getElementById( "audios" );
        audios = data.getElementsByTagName("src")
        audioMax = audios.length;
        selectedMedia = "hljod";
        setMedia( 0 );
        
    } catch (e) { 
        msg( "not a detail page" ) 
    }
}
        
function addClass( node, clss ) {
    var c = "" +  node.className;
    if( c.indexOf( clss ) > -1 ) return;
    c += " " + clss;
    c = c.replace( "  ", " " );
    node.className = c;
}

function removeClass( node, clss ) {
    var c = node.className;
    c = c.replace( clss, "" );
    c = c.replace( "  ", " " );
    node.className = c;
}

/* OGMediaDetail Tabs */
function clickTab( me ) {
	return;
    msg( "click: " + me.id );
    for( var i in mediaTabs ) {
        var tab = document.getElementById( mediaTabs[i] + "Tab" );
        var content = document.getElementById( mediaTabs[i] + "Screen" );
        if( me == tab ) {
            selectedMedia = mediaTabs[i];
            addClass( me, "selected" );
            content.className = "visible";
            document.getElementById( "currentTab" ).value = mediaTabs[i];
            document.getElementById( "mediaName" ).innerHTML = document.getElementById( mediaTabs[i]+"Name" ).innerHTML;
            document.getElementById( "mediaInfo" ).innerHTML = document.getElementById( mediaTabs[i]+"Info" ).innerHTML;
        } else {
            removeClass( tab, "selected" );
            content.className = "hidden";
        }
    }
}

/* Search logic */

function scanForNames( node, elms, theName ) {
    for ( var i=0; i < node.childNodes.length; i++ ) {
        n = node.childNodes[ i ];
        if ( n.nodeType == 1 ) {
            if ( n.getAttribute( "name" ) == theName ) {
                elms.push( n );
            }
            scanForNames( n, elms, theName );
        }
    }
}

function getElementsByName2( theName ) {
    var elms = new Array();
    msg( "scanning for name: " + theName );
    scanForNames( document, elms, theName );
    return elms;
}

function clickRadio( label ) {
    /* if (selectedGlobal == label) { msg( "radio cancelled: " + label ); return "" } */
    selectedGlobal = label
    msg( "radio: " + label )
    
    var value = "";
    var sel = -1;
    
    /* var flds = document.getElementsByName("searchField") */
    var flds = new Array()
    flds[0] = document.getElementById( "globalField" )
    flds[1] = document.getElementById( "personField" )
    flds[2] = document.getElementById( "locationField" )

    for (var i=0; i<rads.length; i++ ) {
        if (flds[i].value != "") {
            value = flds[i].value;
            sel = i;
        }
    }
    
    for (var i=0; i<rads.length; i++) {
        if ( rads[i].value == label )  {
            rads[i].checked = true;
            flds[i].value = value;
        } else {
            flds[i].value = "";
            rows[i].className = "searchRow";
            rads[i].checked = false;
        }
    }
    document.getElementById( label+"Row" ).className = "selectedSearchRow"
    return value
}
function mouseover( label ) {
    var r = document.getElementById( label + "Row" )
    if ( r.className != "selectedSearchRow" )
        r.className = "overSearchRow"
}
function mouseout( label ) {
    var r = document.getElementById( label + "Row" )
    if ( r.className == "overSearchRow" )
        r.className = "searchRow"
}
function mousedown( label ) {
    msg( "mousedown: " + label )
    var fld = document.getElementById( label + "Field" )
    var value = clickRadio( label )
    if ( value != undefined )
        fld.value = value
    msg( "value: " + value )
}    
function mouseup( label ) {
    msg( "mouseup" )
    doingFocus = true
    document.getElementById( label + "Field" ).focus()
    doingFocus = false
    /* focus2( label ) */
    document.getElementById( label + "Field" ).select()
}
function click( label ) {
    msg( "(click)" )
}
function focus2( label ) {
    if ( doingFocus ) { msg( "focus cancelled" ); return }
    msg( "focus2: " + label )
    try {
        document.getElementById( label + "Field" ).value = clickRadio( label )
    } catch (e) { }
}
function selectAll( label ) {
    msg( "select all: " + label )
    try {
        document.getElementById( label + "Field" ).select()
    } catch (e) { }
}
function focusFirst() {
    msg("focusFirst")
    try {
        doingFocus = true
        document.getElementById( selectedGlobal+"Field" ).focus()
        doingFocus = false
    } catch(e) { }
}

function getCookie(c_name) {
    if (document.cookie.length>0) {
        c_start=document.cookie.indexOf(c_name + "=")
        if (c_start != -1) { 
            c_start=c_start + c_name.length+1 
            c_end=document.cookie.indexOf(";",c_start)
            if (c_end==-1) c_end=document.cookie.length
            return unescape(document.cookie.substring(c_start,c_end))
        } 
    }
    return null
}

function setCookie(c_name,value,expiredays) {
    var exdate=new Date()
    exdate.setTime(exdate.getTime()+(expiredays*24*3600*1000))
    document.cookie = c_name + "=" + escape(value) + "; path=/" +
       ((expiredays==null) ? "" : "; expires="+exdate)
}

/** show content for this tab **/
function show(label,showResult) {
    msg( "show: " + label );
    if ( label == "" ) return;
    document.getElementById(label).style.display = "block";
    document.getElementById(label+"Tab").className = "selectedTab";
    for (var t in tabs) {
        if (tabs[ t ] != label) {
            document.getElementById( tabs[ t ] ).style.display = "none"
            document.getElementById( tabs[ t ] + "Tab" ).className = "tableTab"
        }
    }
    if( !showResult )  document.getElementById( "searchResults" ).style.display = "none";    
}

/** show search form for this submenu **/
function submenu(label,showResult) {    
    if ( label == "" ) return
    msg( "submenu: " + label );
    document.getElementById(label).style.display = "block"
    document.getElementById(label+"Tab").className = "selectedSubmenu"
    for (var t in subs) {
        if (subs[ t ] != label ) {
            document.getElementById( subs[ t ] ).style.display = "none"
            document.getElementById( subs[ t ] + "Tab" ).className = "submenu"
        }
    }
    defaultBtn = label+"Btn";
    document.getElementById( "selectedSearchTab" ).value = label;
    if( !showResult )  document.getElementById( "searchResults" ).style.display = "none";
}

function getTabStatus( label, item ) {
    var s = document.getElementById("resultStatus").value
    var elms = s.split("/")
    for ( var i=0; i < elms.length; i++ ) {
        var e = elms[ i ]
        var itms = e.split(",")
        if( itms[ 0 ] == label ) {
            break
        }
    }
    return itms[ item ]
}


function setInnerHTMLofElements( elms, label, item ) {
    for ( var i=0; i < elms.length; i++ ) {
        e = elms[ i ].innerHTML = getTabStatus( label, item )
    }
}

/** show search result for this label **/
function result( label ) {
    msg( "label:" +  label );
	if ( label == undefined || label == "" ) return
    if ( label == "global" || label == "common" ) return
    
    setCookie( cookieName, label, 1 )
    
    try {
        document.getElementById(label+"Result").style.display = "block"
        document.getElementById(label+"ResultTab").className = "selectedTab"
        
        for ( var t in ress ) {
            if (ress[ t ] != label) {
                document.getElementById( ress[ t ] + "Result" ).style.display = "none"
                var e = document.getElementById( ress[ t ] + "ResultTab" )
                if ( e != undefined ) {
                    e.className = "tableTab"
                }
            }
        }
    
        setInnerHTMLofElements( getElementsByName2( "indexOfFirstDisplayedObject"), label, 1 )
        setInnerHTMLofElements( getElementsByName2( "indexOfLastDisplayedObject"), label, 2)
        setInnerHTMLofElements( getElementsByName2( "allObjectsCount"), label, 3)
    
        var elms = getElementsByName2( "dgHasMultipleBatches")
        var hide = getTabStatus( label, 3 ) < numberPerBatch
        for ( var j = 0; j < elms.length; j++ ) {
           if ( hide ) {
                elms[ j ].style.display = "none"
            } else {
                elms[ j ].style.display = "block"
            }
        }
    } catch (e) { msg("result exception") }
}

function defaultClick() {
    msg( "click: " + defaultBtn );
	document.getElementById( defaultBtn ).click();
	return false;
}

function fixEmptyTD() {
    var tds = document.getElementsByTagName("TD");
    for (var i in tds ) {
        if ( tds[i].innerHTML == "" ) tds[i].innerHTML = "&nbsp;";
    }
}

function dataToTarget( dataID, targetID ) {
	var data = document.getElementById( dataID );
	var target = document.getElementById( targetID );
	target.innerHTML = data.getAttribute( "count" );
}

function load() {
    msie = navigator.userAgent.indexOf( "MSIE" ) > -1;
    msg( "msie:" + msie );
    //show(currentTab, true)
    //submenu(currentSub, true)
    result( getCookie(cookieName) )
    focusFirst()
    //fixEmptyTD();
    rows = getElementsByName2( "searchRow" );
    rads = getElementsByName2( "searchRadio" );
    detailInit();
 	if( isFrontpage ) {
		dataToTarget( "im_audio_data", "im_audio_target" );
		dataToTarget( "with_audio_data", "with_audio_target" );
		dataToTarget( "im_song_data", "im_song_target" );
		dataToTarget( "im_book_data", "im_book_target" );
		dataToTarget( "im_recording_data", "im_recording_target" );
		dataToTarget( "og_orgel_data", "og_orgel_target" );
	}
  	msg( "ready" );
}

/* l o o k u p s */

function doLookup(node,event) {
    var ifr = document.getElementById( node.id + "IFrame" );
    var code = event.keyCode;
    var trigger = node.getAttribute( "trigger" );
    if( trigger == undefined || trigger < 1 || trigger > 3 ) trigger = 2;
    if( node.value.length < trigger || code == 27 ) {
        //less than 3 letters or escape key cancels the lookup
        ifr.style.display = "none";
        return;
    }
    var url = document.getElementById( node.id + "URL" ).innerHTML;
    url += "&txt=" + escape( node.value );
    ifr.src = url;
    activeInput = node;
    activeLookup = ifr;
    //ifr.documentContent.innerHTML = "<center><p>augnablik...</p></center>";
    ifr.style.display = "block";
    ifr.setAttribute( "target", activeInput.id );
}

function doneLookup() {
    var ifr = activeLookup; //document.getElementById( activeLookup );
    activeInput.style.display = "none";
    activeInput.value = ifr.getAttribute( "selectedID" );
    ifr.style.display = "none";
    var btnName = activeInput.id + "SubmitButton";
    var btn = document.getElementById( btnName );
    btn.click();
}