var protocolType = document.location.protocol; 
function showImg_72(obj) {
    if (typeof(adObj_72) !== 'undefined') {
        document.getElementById(adObj_72).innerHTML = "<a href=\""+protocolType+"//track.igg.com/click.php?id=72&amp;cid=0\" target=\"_blank\" class=\"link72\"><img src=\""+protocolType+"//track.igg.com/file/image/2011/01/30/2011013002281829271.jpg\" alt=\""+protocolType+"//ab.igg.com/news/news.php?aid=747\" style=\"border:0px;\" /></a>";
    } else {
        obj.parentNode.innerHTML = "<a href=\""+protocolType+"//track.igg.com/click.php?id=72&amp;cid=0\" target=\"_blank\" class=\"link72\"><img src=\""+protocolType+"//track.igg.com/file/image/2011/01/30/2011013002281829271.jpg\" alt=\""+protocolType+"//ab.igg.com/news/news.php?aid=747\" style=\"border:0px;\" /></a>";
    }
}

var imgObj = '<span><img src="'+protocolType+'//track.igg.com/file/image/2011/01/30/2011013002281829271.jpg" onload="showImg_72(this)" style="display:none" /></span>';
document.write(imgObj);