// 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 ) 
   {
      home_on                     = new Image(); 
   home_on.src                 = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_home02.jpg";
   home_off                    = new Image(); 
   home_off.src                = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_home01.jpg";
    
   aboutus_on             = new Image(); 
   aboutus_on.src         = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_aboutus02.jpg";
   aboutus_off            = new Image(); 
   aboutus_off.src        = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_aboutus01.jpg";
   
   services_on               = new Image(); 
   services_on.src           = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_services02.jpg";
   services_off              = new Image(); 
   services_off.src          = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_services01.jpg"; 

   bookajob_on                = new Image(); 
   bookajob_on.src            = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_bookajob02.jpg";
   bookajob_off               = new Image(); 
   bookajob_off.src           = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_bookajob01.jpg";
   
   employment_on                = new Image(); 
   employment_on.src            = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_employment02.jpg";
   employment_off               = new Image(); 
   employment_off.src           = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_employment01.jpg";
   
   contactus_on                = new Image(); 
   contactus_on.src            = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_contactus02.jpg";
   contactus_off               = new Image(); 
   contactus_off.src           = "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_contactus01.jpg";
   
   links_on    		            = new Image(); 
   links_on.src            		= "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_links02.jpg";
   links_off               		= new Image(); 
   links_off.src           		= "http://www.planetengineering.com.au/goldmanplumbing/images/menu/btn_links01.jpg";
   
   } 

// 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