function findobj (str) {
  return (document.getElementById (str));
}

function expandmenu (obj) {
   alert (obj+"is expanding");
   obj.style.display="block";
}

function collapsemenu (obj) {
 alert ("collapsing");
 obj.style.display="none";
}

function hideitem (obj) {
 if (obj)obj.style.display="none";
}

function showitem (obj) {
 if (obj)obj.style.display="";
 if (findobj('master')){
  findobj('master').style.position="relative";
  findobj('master').style.visibility="visible";
 }
}

function dostuff (val) {
  if (val != ""){
  hideitem(findobj('img'));
  hideitem(findobj('desc'))
  }else{
   showitem(findobj('img'));
   showitem(findobj('desc'))
  }
}

function set_current_tab(obj) {
  if (obj)obj.setAttribute('class', "current");
}
function set_blank_tab(obj) {
  if (obj)obj.setAttribute('class', "");
}
function reset_tabs(num) {
  for (i=1;i<=num;i++)set_blank_tab(findobj("tab"+i));
}