function rbIsIE() {
    if (navigator.appName == 'Microsoft Internet Explorer') { return true; }
    return false;
}
function rbIsOpera() {
    if (navigator.appName == 'Opera') { return true; }
    return false;
}
function rbSupportsFixed() {
    if (navigator.appName == 'Microsoft Internet Explorer') {
        var agent = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})"); var version; if (re.exec(agent) != null) { version = parseFloat(RegExp.$1); }
        if (version < 7.0) { return false; } 
    }
    return true;
}
var rbCenter = false; function rbInit() {
    if (rbSupportsFixed()) { var div = document.getElementById('rbBackgroundDiv'); div.setAttribute('style', 'position:fixed'); }
    setTimeout("rbReposition()", 50); rbResize();
}
var rbLastScrollTop = null; var rbSimulateTop = 0; function rbResize() {
    var width; var height; var x, y, w, h; if (rbIsIE()) { width = parseInt(document.documentElement.clientWidth); height = parseInt(document.documentElement.clientHeight); } else if (rbIsOpera()) { width = parseInt(window.innerWidth) - 16; height = parseInt(window.innerHeight); } else { testsize = document.getElementById('rbTestSizeDiv'); width = testsize.scrollWidth; height = testsize.scrollHeight; }
    div = document.getElementById('rbBackgroundDiv'); img = document.getElementById('rbBackground'); if (rbCenter) {
        if (img.width == 0) { setTimeout("rbResize()", 1000); return; }
        w = width; h = width * (img.height / img.width); x = 0; y = (height - h) / 2; if (y < 0) { h = height; w = height * (img.width / img.height); y = 0; x = (width - w) / 2; } 
    } else { x = 0; y = 0; w = width; h = height; }
    div.style.left = parseInt(x) + "px"; if (rbSupportsFixed()) { div.style.top = parseInt(y) + "px"; } else { rbSimulateTop = parseInt(y); }
    img.style.width = parseInt(w) + "px"; img.style.height = parseInt(h) + "px"; div.style.visibility = 'visible'; rbLastScrollTop = null; rbReposition();
}
function rbReposition() {
    if (rbSupportsFixed()) { return; }
    setTimeout("rbReposition()", 50); body = document.documentElement; var scrollTop = body.scrollTop; if (scrollTop == rbLastScrollTop) { return; }
    rbLastScrollTop = scrollTop; div = document.getElementById('rbBackgroundDiv'); var rbBodyDiv = document.getElementById('rbBodyDiv'); var pos = 0; var max = rbBodyDiv.offsetHeight - rbBodyDiv.clientHeight; if (max < 0) { max = 0; }
    if (scrollTop <= max)
    { pos = scrollTop; } else { pos = max; }
    if (pos < 0) { pos = 0; }
    div.style.top = pos + rbSimulateTop;
}
function rbOpen(center)
{ rbCenter = center; document.write("<div id='rbBodyDiv' style='position: relative; padding: 0; margin: 0; z-index: 2; height:100%;width:100%;text-align: center; '>\n"); }
function rbClose(image) {
    document.write("</div>\n"); str = "<div " + "id='rbBackgroundDiv' " + "style='position: absolute; " + "  visibility: hidden; " + "  top: 0px; " + "  left: 0px; " + "  z-index: 0'>" + "  <img "; if (image != "") { str += "src='" + image + "' "; }
    str += "id='rbBackground'></div>\n"; document.write(str); document.write("<div " + "id='rbTestSizeDiv' " + "style='position: fixed; left:0; top:0;width: 100%; " + "  height: 100%; " + "  visibility: hidden; " + "  z-index: -1'></div>\n");
}