// script to allow hover images on mouseover

// code to test to determine the browser type

var ok_browser = 0; 
bName = navigator.appName;             
bVer  = parseInt(navigator.appVersion); 
 
ver = "n2" 

if (bName == "Netscape" && bVer >= 3) 
   {
   ver = "n3";
   }
else 
   {
   if (bName == "Microsoft Internet Explorer" && bVer >= 4) 
      {
      ver = "e4"; 
      }
   }

if (ver == "n3" || ver == "e4")
   {  
   ok_browser = 1; 
   }
else 
   {
   ok_browser = 0;
   }

// code to declare image substitutions

if ( ok_browser == 1 ) 
   {
   img_home_on              = new Image(); 
   img_home_on.src          = "http://www.ozhomepage.com/nodtronics/images/btn_home_over.gif";
   img_home_off             = new Image(); 
   img_home_off.src         = "http://www.ozhomepage.com/nodtronics/images/btn_home_out.gif";
   
   img_products_on              = new Image(); 
   img_products_on.src          = "http://www.ozhomepage.com/nodtronics/images/btn_products_over.gif";
   img_products_off             = new Image(); 
   img_products_off.src         = "http://www.ozhomepage.com/nodtronics/images/btn_products_out.gif";
    
   img_aboutus_on             = new Image(); 
   img_aboutus_on.src         = "http://www.ozhomepage.com/nodtronics/images/btn_aboutus_over.gif";
   img_aboutus_off            = new Image(); 
   img_aboutus_off.src        = "http://www.ozhomepage.com/nodtronics/images/btn_aboutus_out.gif";
   
   img_wheretobuy_on               = new Image(); 
   img_wheretobuy_on.src           = "http://www.ozhomepage.com/nodtronics/images/btn_wheretobuy_over.gif";
   img_wheretobuy_off              = new Image(); 
   img_wheretobuy_off.src          = "http://www.ozhomepage.com/nodtronics/images/btn_wheretobuy_out.gif"; 

   img_contact_on                = new Image(); 
   img_contact_on.src            = "http://www.ozhomepage.com/nodtronics/images/btn_contact_over.gif";
   img_contact_off               = new Image(); 
   img_contact_off.src           = "http://www.ozhomepage.com/nodtronics/images/btn_contact_out.gif";
   
   img_retailer_on                = new Image(); 
   img_retailer_on.src            = "http://www.ozhomepage.com/nodtronics/images/btn_retailer_over.gif";
   img_retailer_off               = new Image(); 
   img_retailer_off.src           = "http://www.ozhomepage.com/nodtronics/images/btn_retailer_out.gif";
   
   img_techsupport_on                = new Image(); 
   img_techsupport_on.src            = "http://www.ozhomepage.com/nodtronics/images/btn_techsupport_over.gif";
   img_techsupport_off               = new Image(); 
   img_techsupport_off.src           = "http://www.ozhomepage.com/nodtronics/images/btn_techsupport_out.gif";
   
      
   } 

// functions to replace images
function imageon(myname) 
   { 
   if ( ok_browser == 1 ) 
      { 
      imgOn = eval(myname + "_on.src"); 
      document[myname].src = imgOn; 
      } 
   } 

function imageoff(myname) 
   { 
   if ( ok_browser == 1 ) 
      { 
      imgOff = eval(myname + "_off.src"); 
      document[myname].src = imgOff; 
      } 
   }  
  
// end script