function check_flash()
{
    var d, n = navigator, m, f = 'Shockwave Flash';
    if((m = n.mimeTypes) && (m = m["application/x-shockwave-flash"]) && m.enabledPlugin && (n = n.plugins) && n[f]) {d = n[f].description}
    else if (window.ActiveXObject) { try { d = (new ActiveXObject((f+'.'+f).replace(/ /g,''))).GetVariable('$version' );} catch (e) {}}
    return d ? d.replace(/\D+/,'').split(/\D+/) : 0;
} 

if(!check_flash())
{
    obj = document.getElementById('photos_background');
    obj.innerHTML = '    <img src="/photos_flash_wide/1.jpg" width="100%" style="position:absolute; top:0px; left:0;" align="middle" />';
}