function opWin(u,w,h,cid) {
    if(u.indexOf("?") != -1){
        window.open(u+"&campaignID="+cid,'downloads','titlebar=no,toolbar=no,resizable=no,status=no,scrollbars=yes,left=100,top=100,screenX=0,screenY=0,width='+w+',height='+h);
    } else {
        window.open(u+"?campaignID="+cid,'downloads','titlebar=no,toolbar=no,resizable=no,status=no,scrollbars=yes,left=100,top=100,screenX=0,screenY=0,width='+w+',height='+h);
    }
}