var expander1, expander2, sntrpll, sndbll;

function initSearch()
{
    
    /** using document.validator.hideableInputText for "Keywords" in text fields */
    if(document.validator)
    {
        for (i = 0; i < document.validator.documentInputs().length; i++)
            if (document.validator.documentInputs()[i].id)
                if (document.validator.documentInputs()[i].id.match(/sn_searchtxt/ig)!=null)
                    document.validator.hideableInputText(document.validator.documentInputs()[i],
                                                "Keywords");
    }    
    /**********************************************************************************
    * Community search
    */    
    
    
    
    /** selecting 'all' and setting onclick for user scope radio buttons */
    if(document.getElementById("scope_com_all"))
    {
        /** making an expander for community */
        expander1 = new SNExpander( "Advanced Options","sn_expandableSearchCommunityButton","sn_expandableSearchCommunity");
        document.getElementById("scope_com_all").checked = true;
        document.getElementById("scope_com_all").onclick = document.getElementById("scope_com_artist").onclick = document.getElementById("scope_com_fan").onclick = document.getElementById("scope_com_industry").onclick = showApplicableCom;
    }
    /** making the "check all" button for community advance genre fields */
    if(document.getElementById("sn_checkAllComGenres"))
    {
        document.getElementById("sn_checkAllComGenres").onclick = function()
        {
            document.validator.checkAllBoxes(
                        "com_genre_",
                        !document.getElementById("com_genre_Alternative").checked);
        }
    }
    
    /** adds options for age select drop downs and makes sure lower bound
     * is always smaller or equal to upper bound */
    if(document.getElementById("sn_selcomage1"))
    {
        var comage1 = document.getElementById("sn_selcomage1");
        var comage2 = document.getElementById("sn_selcomage2");
        comage1.options.length = comage2.options.length = 0;
        comage1.options[0] = new Option("From Age", "");
        comage2.options[0] = new Option("To Age", "");
        for (i = 18; i < 31; i++)
        {
            comage1.options[comage1.options.length] = new Option(i + " and older", i+"");
            comage2.options[comage2.options.length] = new Option(i + " and younger", i+"");
        }
        
        comage1.selectedIndex = comage2.selectedIndex = 0;
        comage2.onchange = function()
        {
            document.validator.keepSelectsRelative(comage1,
                                            this,
                                            ageComparator);
        }
        
        comage1.onchange = function()
        {
            document.validator.keepSelectsRelative(this,
                                            comage2,
                                            ageComparator);
        }
    }

    /** sets location scope for community search */
    if(document.getElementById("location_scope_all"))
    {
        document.getElementById("location_scope_all").checked = true;
        document.getElementById("location_scope_all").onclick = reflectScope;
        document.getElementById("location_scope_spec").onclick = reflectScope;
        document.getElementById("location_scope_near").onclick = reflectScope;
    
    
    var radiusCom = document.getElementById("sn_SearchComLocationRadius");
    var rads = [5,10,25,50,100];
        
    /* 
    document.toolkit.displayElement("location_scope_near", "inline", false);
    document.toolkit.displayElement("labelfornearcom", "inline", false);
    sntrpll = new SNTripleLocation('sn_SearchComLocationCntry',
                                   "sn_SearchComLocationProv",
                                   "sn_SearchComLocationCity");
    sndbll = new SNDoubleLocation("sn_SearchShowLocationCntry",
                                  "sn_SearchShowLocationProv");
    */
    }   
    if(document.getElementById("sn_SearchComOnlineActivity"))
    {
        var onlineact = document.getElementById("sn_SearchComOnlineActivity");
        for (i = 3; i <= 12; i+=3)
        onlineact[onlineact.options.length] = new Option("Last " + i + " months", ""+i);
    }
    
    /**********************************************************************************
    * Show search
    */    
     /** making an expander for show section */
    if(document.getElementById("sn_expandableSearchShowButton"))
    {
        if (document.getElementById("sn_expandableSearchShowButton") && 
            document.getElementById("sn_expandableSearchShow") ) {
            
            expander2 = new SNExpander( "Select Genres",
                "sn_expandableSearchShowButton",
                "sn_expandableSearchShow");
                                    
             /** making the "check all" button for community advance genre fields */
            document.getElementById("sn_checkAllShowGenres").onclick = function()
            {
                document.validator.checkAllBoxes(
                            "show_genre_",
                            !document.getElementById("show_genre_Alternative").checked);
                initStretch();
            }
        }        
        
   }
       
    initStretch();
}


function showApplicableCom()
{
    document.toolkit.displayElement("sn_SearchComGenresHidable", "block", this.value == "artist" || this.value == "fan");
    document.toolkit.displayElement("sn_SearchComAgeHidable","block", this.value == "fan");
    initStretch();
}

function reflectScope()
{
    document.toolkit.displayElement("sn_SearchComLocationSpec", "block", this.value == "specific");
    document.toolkit.displayElement("sn_SearchComLocationNearest", "block", this.value == "nearest");
    initStretch();
}


// it is like strcmp() in C language (see the Unix manual);
// see the documentionat for the formutils.keepSelectsRelative 
// to see why it's passed to that function (for age selects on Search page);
function ageComparator(el1,el2)
{
    var tmp = parseInt(el1.value) - parseInt(el2.value);
    if (tmp == 0) return 0;
    return Math.abs(tmp)/tmp;
}


function submitForm(e)
{
    document.validator.submit(document.forms[e]);
}


document.toolkit.queueEvent({fn:initSearch, args:null});