function hide_subs(s1,s2,s3,s4,s5){

   hide(s1);
   hide(s2);
   hide(s3);
   hide(s4);
   hide(s5);

}


function hide(id){

   if (document.getElementById(id))
   {
      elem = document.getElementById(id);
      elem.style.visibility = "hidden";
   }
   else if (document.all)
   {
      eval( "document.all." + id + ".style.visibility = hidden ");
   }
   else if(document.layers)
   {
      document.layers[id].visibility = hidden;
   }

}

function show(id){

      if (document.getElementById(id))
      {
         elem = document.getElementById(id);
         elem.style.visibility = "visible";
      }
      else if (document.all)
      {
         eval( "document.all.id.style.visibility = visible ");
      }
         else if(document.layers)
      {
         document.layers[id].visibility = visible;
      }


}


function show_info(id){

   for (i = 1 ; i <= 6 ; i++){

   m = "s" + i;

      if (m == id) {

      if (document.getElementById(id))
      {
         elem = document.getElementById(id);
         elem.style.visibility = "visible";
      }
      else if (document.all)
      {
         eval( "document.all.s1.style.visibility = visible ");
      }
         else if(document.layers)
      {
         document.layers[s1].visibility = visible;
      }

      } else {

   if (document.getElementById(m))
   {
      elem = document.getElementById(m);
      elem.style.visibility = "hidden";
   }
   else if (document.all)
   {
      eval( "document.all." + m + ".style.visibility = hidden ");
   }
   else if(document.layers)
   {
      document.layers[m].visibility = hidden;
   }

      }

   }


}




function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;

function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no,status=no' );
}