var settings = {
    parentBlock : new Array('0_words', '1_words'),
    newId : new Array(1, 1),

    tempId : "temp_id",

    helpImage : '<img src="i/help2.gif" style="vertical-align:top;" alt="[?]" width="18" height="18" border="0" />',
    addBrotherImage : '<img title="' + language.addWord + '" alt="' + language.addWord + '" src="i/add_sibling.gif" border="0" width="18" height="18" />',
    addSonImage : '<img title="' + language.addSibling + '" alt="' + language.addSibling + '" src="i/add_son.gif" border="0" width="18" height="18" />',
    killImage : '<img title="' + language.deleteWord + '" alt="' + language.deleteWord + '" src="i/kill.gif" border="0" width="18" height="18" />',
    defaultMin : '1',
    defaultMax : '1',
    defaultType : '',
    disableTree : false,
    disableFirstLevel : false, // disable 1st level sisters
    disableSecondTable : false,
    semModifiers : false,

    grammName : "reqgrm.html",
    grammSize : "width=650, height=600",
    grammHelp : "help-lexic-gram.html",

    semName : "reqsem.html",
    semSize : "width=800, height=750",
    semHelp : "help-lexic-sem.html",
    semHelpAdditional : "help-lexic-sem-add.html",

    flagsName : "reqflags.html",
    flagsSize : "width=400, height=350",
    flagsHelp : "help-flags.html",

    linksName : "reqrel-syntax.html",
    linksSize : "width=800, height=900",
    linksHelp : "help-syntax-links.html",

    attrsName : "reqattrs.html",
    attrsSize : "width=900, height=400",
    attrsHelp : "help-attrs.html",

    helpLexicWord : "help-lexic-word.html",

    mode : "main"
}

function openPopup(name, val, str) {
    dialog = window.open(name, val, "scrollbars=yes, resizable=yes, " + str);
    dialog.focus();
}

function getGramm(name) {
    openPopup(settings.grammName, "gramm" + name, settings.grammSize);
}

function getSem(name) {
    openPopup(settings.semName, "sem" + name, settings.semSize);
}

function getFlags(name) {
    openPopup(settings.flagsName, "flags" + name, settings.flagsSize);
}

function getLinks(name) {
    openPopup(settings.linksName, "type" + name, settings.linksSize);
}

function getAttr(name) {
    openPopup(settings.attrsName, "attr" + name, settings.attrsSize);
}

function get_id(block, name) {
    return block + "_" + name;
}

function add_sibling ( block, id ) {
    var caller = null;
    if ( id != 0 ) {
        caller = document.getElementById( get_id(block, "word") + id );
    }
    var newword = document.createElement ("DIV");
    newword.id = get_id(block, "word") + settings.newId[block];
    var currparent = id == 0 ? 0 : document.getElementById(get_id(block, "parent") + id).value;
    var currlevel = 0;
    if ( id != 0 ) {
        currlevel = parseInt(document.getElementById(get_id(block, "level") + id).value);
        newword.style.marginLeft = (currlevel*20) + "px";
    } else {
        currlevel = 0;
        newword.style.marginLeft = "0px";
    }
    newword.innerHTML = draw_word ( block, settings.newId[block], currparent, currlevel );
    var nextword = caller == null ? null : count_nextbroth(caller, parseInt(caller.getElementsByTagName("INPUT")[1].value));
    settings.parentBlock[block].insertBefore( newword, nextword );
    settings.newId[block]++;
}

function count_nextbroth( caller, parentlevel ) { // search for the next word of the same level
    if ( caller.nextSibling == null || ( parseInt(caller.nextSibling.getElementsByTagName("INPUT")[1].value) <= parentlevel )) {
        return caller.nextSibling;
    }
    else return count_nextbroth(caller.nextSibling, parentlevel);
}

function add_child ( block, id ) {
    var caller = null;
    if ( id != 0 ) {
        caller = document.getElementById( get_id(block, "word") + id );
    }
    var newword = document.createElement ("DIV");
    newword.id = get_id(block, "word") + settings.newId[block];
    var currparent = id == 0 ? 0 : id;
    var currlevel = 0;
    if ( id != 0 ) {
        currlevel = parseInt(document.getElementById(get_id(block, "level") + id).value) + 1;
        newword.style.marginLeft = (currlevel*20) + "px";
    }
    else {
        currlevel = 0;
        newword.style.marginLeft = "0px";
    }
    newword.innerHTML = draw_word ( block, settings.newId[block], currparent, currlevel );
    settings.parentBlock[block].insertBefore( newword, caller == null ? null : caller.nextSibling );
    settings.newId[block]++;
}

function kill ( block, id ){
    var caller = document.getElementById(get_id(block, "word") + id);
    if (caller) {
        var parentlevel = parseInt(caller.getElementsByTagName("INPUT")[1].value);
        var nextword = caller.nextSibling;
        settings.parentBlock[block].removeChild(caller);
        while ( nextword != null && ( parseInt(nextword.getElementsByTagName("INPUT")[1].value) > parentlevel ) ) {
            nextnextword = nextword.nextSibling;
            settings.parentBlock[block].removeChild(nextword);
            nextword = nextnextword;
        }
    }
}

function ed_syntaxrel(link) {
    if(link.checked) {
        link.nextSibling.nextSibling.disabled = false;
        link.nextSibling.nextSibling.style.background = "";
    }
    else {
        link.nextSibling.nextSibling.disabled = true;
        link.nextSibling.nextSibling.style.background = "#e0e0e0";
    }
}

function draw_word ( block, id, parentid, level ) {
    var no_words = settings.parentBlock[block].innerHTML == '' ? 1 : 0;
    var kill_link = (no_words == 1) ?
        '<img src="/i/dot.gif" width="16" height="16" alt="" />' :
        '<a id="' + get_id(block, "linkkill") + id + '" href="javascript:kill(' + block + ', \'' + id + '\')">' + settings.killImage + '</a>';
    var addbrth_link = (level == 0 && settings.disableFirstLevel) ?
        '<img src="/i/dot.gif" width="16" height="16" alt="" />' :
        '<a id="' + get_id(block, "linkaddbroth") + id + '" href="javascript:add_sibling(' + block + ', \'' + id + '\')">' + settings.addBrotherImage + '</a>';
    var addson_link = (!settings.disableTree) ?
        '<a id="' + get_id(block, "linkaddson") + id + '" href="javascript:add_child(' + block + ', \'' + id + '\')">' + settings.addSonImage + '</a>' :
        '';

    var innercode = '';
    innercode += '<input type="hidden" id="' + get_id(block, "parent") + '' + id + '" name="parent" value="' + parentid + '"/>';
    innercode += '<input type="hidden" id="' + get_id(block, "level") + '' + id + '" name="level" value="' + level + '"/>';

    if (block == 0) {
        if ( no_words == 0 ) {
            innercode +=
                '<table class="distreq"><tr><td>' + language.distance +  (settings.disableTree?'':language.fromParent) + ':'+
                    ' ' + language.from + ' <input type="text" id="' + get_id(block, "min") + id + '" name="min' + id + '" size="4" value="' + settings.defaultMin + '" class="text" />'+
                    ' ' + language.to + ' <input type="text" id="' + get_id(block, "max") + id + '" name="max' + id + '" size="4" value="' + settings.defaultMax + '" class="text" />'+
                    ' <a href="help-lexic-order.html" onClick="return showhelp(\'help-lexic-order.html\',0.7)">' + settings.helpImage + '</a>'+
                    '</td></tr>';
            if ( settings.linksName ) {
                innercode +=
                    '<tr><td>' +
                    '<input type="checkbox" id="' + get_id(block, "link") + id + '" name="link' + id + '" checked="checked" onclick="ed_syntaxrel(this)" />' +
                    language.syntacticRelationship + ' <input type="text" id="' + get_id(block, "type") + id + '" name="type' + id + '" value="' + settings.defaultType + '" class="text" size="60" /> ' +
                    ' <a href="' + settings.linksHelp + '" onClick="return showhelp(\'' + settings.linksHelp + '\',0.7)">' + settings.helpImage + '</a> '+
                    '<a href="javascript:getLinks(' + id + ')">' + language.select + '</a>' +
                    '</td></tr>';
            }
            innercode += '</table>';
        }
        var widthSettings = (settings.semName) ? "wordreqtext" : "wordreqtext50";
        innercode +=
            '<table class="wordreq">' +
                '<tr valign="bottom">' +
                    '<td class="' + widthSettings + '">' +
                        language.word + ' ' +
                        ' <a href="help-lexic-word.html" onClick="return showhelp(\'help-lexic-word.html\',516)">' + settings.helpImage + '</a>'+
                        ' <a href="#" onClick="return getVkb(\'lex' + id + '\' )"><img style="vertical-align:bottom;" src="i/keyboard.gif" alt="Virtual keyboard" title="Virtual keyboard" width="42" height="21" border="0"></a>' +
                    '</td>' +
                    '<td class="' + widthSettings + '">' +
                        language.grammFeatures + ' ' +
                        ' <a href="' + settings.grammHelp + '" onClick="return showhelp(\'' + settings.grammHelp + '\',0.8)">' + settings.helpImage + '</a>'+
                        ' <a href="javascript:getGramm(' + id + ')">' + language.select + '</a>'+
                    '</td>';
        if (settings.semName) {
            innercode +=
                    '<td class="' + widthSettings + '">' +
                        language.semFeatures + ' ' +
                        ' <a href="' + settings.semHelp + '" onClick="return showhelp(\'' + settings.semHelp + '\',0.8)">' + settings.helpImage+'</a>'+
                        ' <a href="javascript:getSem(' + id + ')">' + language.select + '</a>&nbsp;'+
                    '</td>';
        }
        innercode +=
                    '<td>&nbsp;</td>' +
                '</tr><tr>' +
                    '<td class="wordreqinput">'+
                        '<input type="text" id="' + get_id(block, "lex") + id + '" name="lex' + id + '" class="text100">'+
                    '</td>'+
                    '<td class="wordreqinput">'+
                        '<input type="text" id="' + get_id(block, "gramm") + id + '" name="gramm' + id + '" class="text100">'+
                    '</td>';
        if (settings.semName) {
            innercode +=
                '<td class="wordreqinput">' +
                    '<input type="text" id="' + get_id(block, "sem") + id + '" name="sem' + id + '" class="text100">' +
                '</td>';
        }
        innercode +=
                    '<td valign=bottom style="padding:0 10px 10px 0"><nobr>' +
                        addbrth_link +
                        addson_link +
                        kill_link +
                    '</nobr></td>' +
                '</tr>';

        if (settings.flagsName) {
            innercode +=
                '<tr>'+
                    '<td class="wordreqtext" style="padding:0 10px 10px 10px">'+
                        language.additionalFeatures + ' ' +
                        ' <a href="' + settings.flagsHelp + '" onClick="return showhelp(\'' + settings.flagsHelp + '\',0.8)">' + settings.helpImage + '</a>'+
                        ' <a href="javascript:getFlags(' + id + ')">' + language.select + '</a>'+
                    '</td>'+
                    '<td class="wordreqinput">'+
                        '<input type="text" id="' + get_id(block, "flags") + id + '" name="flags' + id + '" class="text100">'+
                    '</td>';
            if (settings.semModifiers) {
                innercode +=
                    '<td class="wordreqtext" style="padding:0 10px 10px 10px">'+
                        '<input type="checkbox" id="' + get_id(block, "sem-mod") + id + '" name="sem-mod' + id + '" value="sem" checked>' + language.sem + '&nbsp;' +
                        '<input type="checkbox" id="' + get_id(block, "sem-mod") + id + '" name="sem-mod' + id + '" value="sem2" checked>' + language.sem2 + '&nbsp;' +
                        '<input type="checkbox" id="' + get_id(block, "sem-mod") + id + '" name="sem-mod' + id + '" value="semf">' + language.semf + '&nbsp;' +
                        '<input type="checkbox" id="' + get_id(block, "sem-mod") + id + '" name="sem-mod' + id + '" value="semf2">' + language.semf2 + '&nbsp;' +
                        ' <a href="' + settings.semHelpAdditional + '" onClick="return showhelp(\'' + settings.semHelpAdditional + '\',0.8)">' + settings.helpImage + '</a>'+
                    '</td>';
            }
            innercode += '</tr>';
        }
        innercode += '</table>';
        return innercode;
    } else {
        if ( no_words == 0 ) {
            innercode += '<br/>';
        }
        var widthSettings = "wordreqtext50";
        innercode +=
            '<table class="wordreq">' +
                '<tr valign="bottom">' +
                    '<td class="' + widthSettings + '">' +
                        language.feature + ' ' +
                        ' <a href="' + settings.attrsHelp + '" onClick="return showhelp(\'' + settings.attrsHelp + ' \',0.8)">' + settings.helpImage + '</a>'+
                        ' <a href="javascript:getAttr(' + id + ')">' + language.select + '</a>'+
                    '</td>' +
                    '<td class="' + widthSettings + '"/>';
        innercode +=
                    '<td>&nbsp;</td>' +
                '</tr><tr>' +
                    '<td class="wordreqinput">'+
                        '<input type="text" id="' + get_id(block, "attr") + id + '" name="attr' + id + '" class="text100">'+
                    '</td>'+
                    '<td class="wordreqinput">'+
                        '<input type="text" id="' + get_id(block, "val") + id + '" name="val' + id + '" class="text100">'+
                    '</td>';
        innercode +=
                    '<td valign=bottom style="padding:0 10px 10px 0"><nobr>' +
                        addbrth_link +
                        addson_link +
                        kill_link +
                    '</nobr></td>' +
                '</tr>';
        innercode += '</table>';
    }
    return innercode;
}

function swap_fields(block, name, first, second) {
    var id = get_id(block, name);
    var fid = document.getElementById(id + first);
    var sid = document.getElementById(id + second);

    if (sid) {
        sid.id = settings.tempId;
    }
    if (fid) {
        fid.id = id + second
    }
    sid = document.getElementById(settings.tempId)
    if (sid) {
        sid.id = id + first;
    }

    fid = document.getElementById(id + first);
    sid = document.getElementById(id + second);
    if (fid) {
        fid.name = name + first;
    }
    if (sid) {
        sid.name = name + second;
    }
}

function swap_words(block, curid, newid) {
    var level = document.getElementById(get_id(block, "level") + curid).value;
    var tmp;
    if (document.getElementById(get_id(block, "word") + curid).previousSibling != null ) {
        swap_fields(block, "min", curid, newid);
        swap_fields(block, "max", curid, newid);
        if ( level != 0 && settings.linksName ) {
            swap_fields(block, "type", curid, newid);
            swap_fields(block, "link", curid, newid);
        }
        swap_fields(block, "linkkill", curid, newid);
        if (tmp = document.getElementById(get_id(block, "linkkill") + curid)) {
            tmp.href = 'javascript:kill(' + block + ', \'' + curid + '\')';
        }
        if (tmp = document.getElementById(get_id(block, "linkkill") + newid)) {
            tmp.href = 'javascript:kill(' + block + ', \'' + newid + '\')';
        }
    }
    swap_fields(block, "parent", curid, newid);
    swap_fields(block, "level", curid, newid);
    swap_fields(block, "lex", curid, newid);
    swap_fields(block, "gramm", curid, newid);
    swap_fields(block, "sem", curid, newid);
    swap_fields(block, "flags", curid, newid);
    swap_fields(block, "attr", curid, newid);
    swap_fields(block, "val", curid, newid);
    if ( !settings.disableFirstLevel || level != 0 ) {
        swap_fields(block, "linkaddbroth", curid, newid);
        if (tmp = document.getElementById(get_id(block, "linkaddbroth") + curid)) {
            tmp.href = 'javascript:add_sibling(' + block + ', \'' + curid + '\')';
        }
        if (tmp = document.getElementById(get_id(block, "linkaddbroth") + newid)) {
            tmp.href = 'javascript:add_sibling(' + block + ', \'' + newid + '\')';
        }
    }
    if ( !settings.disableTree) {
        swap_fields(block, "linkaddson", curid, newid);
        if (tmp = document.getElementById(get_id(block, "linkaddson") + curid)) {
            tmp.href = 'javascript:add_child(' + block + ', \'' + curid + '\')';
        }
        if (tmp = document.getElementById(get_id(block, "linkaddson") + newid)) {
            tmp.href = 'javascript:add_child(' + block + ', \'' + newid + '\')';
        }
    }
    swap_fields(block, "word", curid, newid);
}

function order_indexes_main (block) {
    var words = settings.parentBlock[block].getElementsByTagName("DIV");
    var parents = new Array("0");
    var nextword = words[0];
    for(var i = 0; i < words.length; i++) {
        words[i].getElementsByTagName("INPUT")[0].value = parents[parents.length - 1];
        currlevel = words[i].getElementsByTagName("INPUT")[1].value;
        nextword = words[i].nextSibling;
        if(nextword != null) {
            nextwordlevel = nextword.getElementsByTagName("INPUT")[1].value;
            if(currlevel < nextwordlevel) parents.push(i+1);
            if(currlevel > nextwordlevel) for(j = 0; j < (currlevel-nextwordlevel); j++) {
                parents.pop();
            }
        }
        curid = words[i].id.substr(get_id(block, "word").length);
        swap_words(block, curid, i+1)
    }
}

function order_indexes () {
    order_indexes_main(0);
    if (!settings.disableSecondTable) {
        order_indexes_main(1);
    }
}

function get_cookie(str) {
    var beg = document.cookie.indexOf(str + "=");
    if(beg==-1)
        return "";
    var end = document.cookie.indexOf(";", beg + str.length);
    if(end==-1)
        end = document.cookie.length;
    return document.cookie.substring(beg + str.length + 1, end);
}

function init(){
    settings.parentBlock[0] = document.getElementById(settings.parentBlock[0]);

    add_sibling (0, 0 );
    if (!settings.disableTree) {
        add_child (0, 1 );
    }
    if (!settings.disableFirstLevel) {
        add_sibling (0, 0 );
    }

    if (!settings.disableSecondTable) {
        settings.parentBlock[1] = document.getElementById(settings.parentBlock[1]);
        add_sibling (1, 0 );
        add_sibling (1, 0 );
    }

    var x = get_cookie(settings.mode)
    if (x) {
        x = x.split("&");
        if (x.length > 0) {
            document.reqForm.mycorp.value = x[0];
            document.exactForm.mycorp.value = x[0];
        }
        if (x.length > 1) {
            document.reqForm.mysent.value = x[1];
            document.exactForm.mysent.value = x[1];
        }
        if (x.length > 2) {
            document.reqForm.mysize.value = x[2];
            document.exactForm.mysize.value = x[2];
        }
    }
    x = get_cookie("dpp");
    document.reqForm.dpp.value = x;
    document.exactForm.dpp.value = x;

    x = get_cookie("spp");
    document.reqForm.spp.value = x;
    document.exactForm.spp.value = x;

    x = get_cookie("spd");
    document.reqForm.spd.value = x;
    document.exactForm.spd.value = x;
}