//### IE Check
var IE = (document.all && document.fireEvent && navigator.platform == "Win32") ? true : false;

//### PNG Fix
function pngfix() {
    if (IE) {
        var i, a, f;
        for(i=0; (a = document.getElementsByTagName("img")[i]); i++) {
            if (a.src.substr(a.src.length-4, 4) == ".png") {
                f = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + a.src + "')";
                a.src = site_url+"/images/cron.gif";
                a.style.filter = f;
            }
        }
    }
}

//### activate: PNG Fix ?
if (IE) {
    window.attachEvent("onload", pngfix);
}

//### who posted list
function who(topic) {
    window.open(site_url+"/functions.php?action=who&id="+topic,"who","height=300,width=220,toolbar=no,scrollbars=yes,resizable=no");
}