fValidVer = 
   (((navigator.appName == "Netscape") && 
   (parseInt(navigator.appVersion) >= 3 )) || 

   ((navigator.appName == "Opera") && 
   (parseInt(navigator.appVersion) >= 6 )) ||

   ((navigator.appName == "Microsoft Internet Explorer") && 
   (parseInt(navigator.appVersion) >= 4 )));

  if (document.images){
   <!--BUTTONS-->
   var animalcontrol_normal = new Image;
   animalcontrol_normal.src = "../images/button-animalcontrol.gif";
   animalcontrol_hover = new Image;
   animalcontrol_hover.src = "../images/button-animalcontrol-hover.gif";

   var explorers_normal = new Image;
   explorers_normal.src = "../images/button-explorers.gif";
   explorers_hover = new Image;
   explorers_hover.src = "../images/button-explorers-hover.gif";

   var communityphotos_normal = new Image;
   communityphotos_normal.src = "../images/button-communityphotos.gif";
   communityphotos_hover = new Image;
   communityphotos_hover.src = "../images/button-communityphotos-hover.gif";
   
   var contact_normal = new Image;
   contact_normal.src = "../images/button-contact.gif";
   contact_hover = new Image;
   contact_hover.src = "../images/button-contact-hover.gif";

   var pressreleases_normal = new Image;
   pressreleases_normal.src = "../images/button-pressreleases.gif";
   pressreleases_hover = new Image;
   pressreleases_hover.src = "../images/button-pressreleases-hover.gif";

   var recruiting_normal = new Image;
   recruiting_normal.src = "../images/button-recruiting.gif";
   recruiting_hover = new Image;
   recruiting_hover.src = "../images/button-recruiting-hover.gif";   

   var links_normal = new Image;
   links_normal.src = "../images/button-links.gif";
   links_hover = new Image;
   links_hover.src = "../images/button-links-hover.gif";   

   var newsletters_normal = new Image;
   newsletters_normal.src = "../images/button-newsletters.gif";
   newsletters_hover = new Image;
   newsletters_hover.src = "../images/button-newsletters-hover.gif";   

   var faq_normal = new Image;
   faq_normal.src = "../images/button-faq.gif";
   faq_hover = new Image;
   faq_hover.src = "../images/button-faq-hover.gif";   

   var divisions_normal = new Image;
   divisions_normal.src = "../images/button-divisions.gif";
   divisions_hover = new Image;
   divisions_hover.src = "../images/button-divisions-hover.gif";   

   var mostwanted_normal = new Image;
   mostwanted_normal.src = "../images/button-mostwanted.gif";
   mostwanted_hover = new Image;
   mostwanted_hover.src = "../images/button-mostwanted-hover.gif";   

   var crimeinformation_normal = new Image;
   crimeinformation_normal.src = "../images/button-crimeinformation.gif";
   crimeinformation_hover = new Image;
   crimeinformation_hover.src = "../images/button-crimeinformation-hover.gif";   

   var history_normal = new Image;
   history_normal.src = "../images/button-history.gif";
   history_hover = new Image;
   history_hover.src = "../images/button-history-hover.gif";   
      
   var home_normal = new Image;
   home_normal.src = "../images/button-home.gif";
   home_hover = new Image;
   home_hover.src = "../images/button-home-hover.gif";   
   
   var closewindow_normal = new Image;
   closewindow_normal.src = "../images/button-closewindow.gif";
   closewindow_hover = new Image;
   closewindow_hover.src = "../images/button-closewindow-hover.gif";   

   var siteinfo_normal = new Image;
   siteinfo_normal.src = "../images/button-siteinfo.gif";
   var siteinfo_hover = new Image;
   siteinfo_hover.src = "../images/button-siteinfo-hover.gif";  
  }

  function Swap(image1, image2) {
   if (document.images)
   	document.images[image1].src = eval(image2 + ".src");
  }