function dummy() {return false;}
function setFocus() {var id=document.getElementById('focus');if(id && id!=null) document.getElementById('focus').focus();}
function progressOpen() {var id=document.getElementById('progress');if(id && id!=null) id.style.display='block';}
function progressClose() {var id=document.getElementById('progress');if(id && id!=null) id.style.display='none';}