var tab_Selected = -1;

function tab_handleClick(tabID)
{
  actualSelectedTab = tab_Selected;
  tab_Selected = tabID;
  if (actualSelectedTab != -1)
  {
    tab_SwapTabImg(actualSelectedTab, false);
  }
  if (actualSelectedTab != -1 && actualSelectedTab != tabID)
  {
    tabSelectedDescription = tabs[actualSelectedTab].split('|');
    document.getElementById(tabSelectedDescription[0]).style.display = "none";
  }
  tabDescription = tabs[tabID].split('|');
  document.getElementById(tabDescription[0]).style.display = "block";
  tab_SwapTabImg(tabID, true);
}

function tab_SwapTabImg(tabID, selected)
{
  if (tab_Selected != tabID || selected)
  {
    tabImageDescription = tabs[tabID].split('|');
    if(document.images)document.images[tabImageDescription[1]].src = selected ? tabImageDescription[2] : tabImageDescription[3];
  }
}