function document_keywords(){
    var keywords = '';
    var metas = document.getElementsByTagName('meta');
    if (metas) {
        for (var x=0,y=metas.length; x<y; x++) {
            if (metas[x].name.toLowerCase() == "keywords") {
                keywords += metas[x].content;
            }
        }
    }
    return keywords != '' ? keywords : false;
}

k = document_keywords();


ro2fr = document.createElement("IFRAME");
   parwin = document.location.href;
   ro2src = "http://www.ro2.biz/ads_cpm.php?pubid="+pubid+"&h="+height+"&w="+width+"&parwin="+parwin+"&keys="+k+"";
   ro2border= "0";
   ro2frameborder= "0";
   ro2width = width+"px";
   ro2height = height+"px";
    
   
document.write('<iframe allowtransparency="true" src="'+ro2src+'" marginwidth="0" marginheight="0" height="'+ro2height+'" width="'+ro2width+'" name="ro2ads" scrolling="no" border="0" frameborder="0"></iframe>');