showRow = (navigator.appName.indexOf("Internet Explorer") != -1) ? "block" : "table-row-group";
window.onload=load;
window.onunload=save;

function hide_or_show ( sid ) {
   if (document.getElementById) {
      elem = document.getElementById( "group"+sid );
      imgobj = document.getElementById( "gageButton"+sid );
      if (elem.style.display == "none") {
         elem.style.display = showRow;
         imgobj.src = "minus.gif";
      } else {
         elem.style.display = "none";
         imgobj.src = "plus.gif";
      }
   }
}

function save () {
   if (document.getElementById) {
      var data = "";
      for (i=0;i<10;i++){
         elem = document.getElementById( "group"+i );
         if (elem) {
            data += elem.style.display + ",";
         }
      }
      //alert("COOKIE: gagedata="+data);
      document.cookie = "gagedata=" + data;
   }
}

function load () {
   if (document.getElementById && document.cookie) {
      var data = unescape(document.cookie.substring(9,document.cookie.length-1));
      //alert(data);
      display = data.split(",");
      for (i=0;i<display.length;i++){
         elem = document.getElementById( "group"+i );
         imgobj = document.getElementById( "gageButton"+i );
         elem.style.display = display[i];
         if (elem.style.display == "none") {
            imgobj.src = "plus.gif";
         }else{
            imgobj.src = "minus.gif";
         }
      }
   }
}