function SetBack() {
sW=screen.width;
sH=screen.height;

if ((sW > 100) && (sH > 100))  Bckg = "/image/cloud"+sW + "x" + sH +".jpg";
else Bckg = "/image/cloud1024x768.jpg";

document.body.background = Bckg;
}

function SetSpace(space) {
document.write("<img src='/image/1x1.gif' height='"+space+"'><br>"); 
}

function GetMedia(suid_md5_, cntx_) {
 var req = new JsHttpRequest();

 req.onreadystatechange = function() 
 {
  if (req.readyState == 4) 
  {
   if (req.responseJS) 
   {
    with (req.responseJS) 
    {
     if ((valid) && (err_txt == '')) 
     {
      if (confirm(qst_txt)) {location.href=url;}
     }
     else {alert(err_txt);}
    }
   }
  }
 }
 req.caching = false;
 req.open('POST', '/include/get_file.php', true);
 req.send({ suid_md5: suid_md5_, cntx: cntx_ });
}