// Browser Detection Block
var IE = (document.all) ? 1:0  // determines whether or not the browser is Internet Explorer
var NS = (document.layers) ? 1:0 // determines whether or not the browser is Netscape v. < 6.

var br;
var vstate = "";
var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
if (bName == "Netscape" && bVer >= 5) br = "n6";
var agt=navigator.userAgent.toLowerCase();
var isOpera = (agt.indexOf("opera") != -1);
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
if(NS) MM_reloadPage(true);


////////////////////////////////


function na_preload_img()
{ 
  var img_list = na_preload_img.arguments;
  if (document.preloadlist == null) 
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length; i++) {
    document.preloadlist[top+i] = new Image;
    document.preloadlist[top+i].src = img_list[i+1];
  } 
}

function na_change_img_src(name, nsdoc, rpath, preload)
{ 
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img) {
    img.altsrc = img.src;
    img.src    = rpath;
  } 
}

function na_restore_img_src(name, nsdoc)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img && img.altsrc) {
    img.src    = img.altsrc;
    img.altsrc = null;
  } 
}

 
function changeDB(DB_name) { 
    DB_search_page=DB_name.options[DB_name.selectedIndex].value;
    window.location.href=DB_search_page;
}