function sm(smv,obj){
if ( document.getElementById(smv).style.display == "block"){
  document.getElementById(smv).style.display = "none";
  obj.getElementsByTagName("img")[0].src="img/down.gif";
  }
else{
  document.getElementById(smv).style.display = "block";
  obj.getElementsByTagName("img")[0].src="img/up.gif";
  }
}
function sma(smv){
if ( document.getElementById(smv).style.display == "block"){
  document.getElementById(smv).style.display = "none";
  }
else{
  document.getElementById(smv).style.display = "block";
  }
}