function toggleContentWindow(tabid,tabidtot) {
  for (i=1;i<=tabidtot;i++) {
    document.getElementById("contentWindow_" + i).style.display = "none";
    document.getElementById("toggleLink_" + i).className = "toggleLink_inactive";		  
  }  
  document.getElementById("contentWindow_" + tabid).style.display = "block";
  document.getElementById("toggleLink_" + tabid).className = "toggleLink_active";
}