var RELATED = {};

RELATED.getRelatedEntry = function() {
    var tag = document.getElementById("tag");
    if (tag.firstChild) {
        tag.removeChild(tag.firstChild);
    }
    tag.appendChild(this.createIframe());
    return false;
}

RELATED.createIframe = function() {
    var iframe = document.createElement("iframe");
    with(iframe.style) {
        border = 0;
        width = "800px";
        height = "280px";
    }
    var h  = (document.forms[0].h.checked)  ? 1 : 0;
    var b  = (document.forms[0].b.checked)  ? 1 : 0;
    var i  = (document.forms[0].i.checked)  ? 1 : 0;
    var br = (document.forms[0].br.checked) ? 1 : 0;
    iframe.src = [
        'http://api.fkoji.com/related?s=' + document.forms[0].s.value,
        'e=' + document.forms[0].e.value,
        'n=' + document.forms[0].n[document.forms[0].n.selectedIndex].value,
        'k=' + encodeURIComponent(document.forms[0].k.value),
        'h=' + h,
        'b=' + b,
        'i=' + i,
        'br='+ br
    ].join('&');
    return iframe;
}