function quoted(str) {
    return (str != null) ? '"' + str + '"' : '""';
}



function books_showad() {

    var w = window;
    var frameheight = 600;


  
    
    books_url = 'http://www.bogorm.dk/bogannoncer.asp?' +
            't=' + w.books_t +
			'&f=' + w.books_f +
			'&i=' + w.books_i +
			'&a=' + w.books_a +
			'&m=' + w.books_m +
            '&d=' + w.books_d;
            

    if (w.books_d == '') {
        frameheight = 175 * (Math.ceil(w.books_a / 4));
        framewidth = 600;
        var randomnumber = Math.floor(Math.random() * 1000);
        frameid = 'Iframe' + randomnumber;
        if (w.books_m != '') {
            frameheight = frameheight + 60;
        }
    }
    else {
        frameheight = 1;
        framewidth = 1;
        frameid = 'Iframe' + w.books_a;
    }

    if (w.books_s != "") {
        document.write('<div id="bookads' + frameid + '"><center><img src="/grafik/arbejder.gif"><br /><span class="bread">Henter bog annoncer..</span></center></div>');
    } else {
        document.write('<div id="bookads' + frameid + '"></div>');
    }
    

    

    if (w.books_d == '') {

        if (w.books_w > 0) {
            document.write('<div id="bookadsupdater"></div>');
            displayiframe(books_url, 1, 1, 'updater');
            var t = setTimeout("displayiframe('" + books_url + "','" + frameheight + "','" + framewidth + "','" + frameid + "')", w.books_w);
        } else {
            displayiframe(books_url, frameheight, framewidth, frameid);
        }
    
    }
    else {

        displayiframe(books_url, frameheight, framewidth, frameid);
        
    }
    

}

function displayiframe(books_url, frameheight, framewidth, frameid) {

    
   strframe='<ifr' + 'ame' +
                     ' name=books' +
                     ' id=' + frameid +
                     ' width=' + framewidth +
                     ' height=' + frameheight +
                     ' src=' + books_url +
		             ' frameborder=0 ' +
                     ' marginwidth="0"' +
                     ' marginheight="0"' +
                     ' vspace="0"' +
                     ' hspace="0"' +
                     ' allowtransparency="true"' +
                     ' scrolling="no" rel="nofollow"></ifr' + 'ame>'
   // document.write('');

    document.getElementById('bookads' + frameid).innerHTML = strframe;
}


    books_showad();