function show(fieldvalue) {
switch(fieldvalue)
{

case 0:
document.getElementById("read").style.display="block";
document.getElementById("rss").style.display="none";
break;

case 1:
document.getElementById("read").style.display="none";
document.getElementById("rss").style.display="block";
break;

case 2:
document.getElementById("read").style.display="none";
document.getElementById("rss").style.display="none";
break;

}
}