//  <!--  
var tnav=new Array('history','about','events','tours','kids');
var snav=new Array('people','house','quarter','map','architecture','timeline','membership','donate','eventinfo','quartermap','postcards','volunteer','contact','links','rentals','tourroutes','puzzles','kidstours','storybum','fallback','shamrock','walkthrough');
var tnavSelected = "";
var snavSelected = "";

if (document.images) {
 for (i=0;i<tnav.length;i++)    {
   eval(tnav[i]+"off = new Image();")
   eval(tnav[i]+"off.src = '/images/topnavoff-"+tnav[i]+".gif';")
   eval(tnav[i]+"on = new Image();")
   eval(tnav[i]+"on.src = '/images/topnavon-"+tnav[i]+".gif';")
 }
 for (i=0;i<snav.length;i++)    {
   eval(snav[i]+"off = new Image();")
   eval(snav[i]+"off.src = '/images/leftnavoff-"+snav[i]+".gif';")
   eval(snav[i]+"on = new Image();")
   eval(snav[i]+"on.src = '/images/leftnavon-"+snav[i]+".gif';")
 }
}

function imgOn(imgName) {
  if (document.images) {
    document[imgName].src = eval(imgName + "on.src");
  }
}

function imgOff(imgName) {
  if (document.images) {
    if(imgName!=tnavSelected && imgName!=snavSelected) {
      document[imgName].src = eval(imgName + "off.src");
    }
  }
}

// -->