<!-- hide from non-JavaScript browsers    
// Netscape 3.0 compatibility test (for javascript image swapping)
compat = false;
if( parseInt( navigator.appVersion ) >= 3 ) { compat = true; }
// cache images for quick swapping
if( compat )
{

arrowon = new Image;
arrowon.src = "http://www.scubaaustralia.com.au/images/arrow_white.gif";
arrowoff = new Image;
arrowoff.src = "http://www.scubaaustralia.com.au/images/dot.gif";

aroon = new Image;
aroon.src = "http://www.scubaaustralia.com.au/images/aro_red.gif";
arooff = new Image;
arooff.src = "http://www.scubaaustralia.com.au/images/dot.gif";

}

// generic image swap function
function doSwapGen(x, y)
{
   if( compat ) { 
    document.images[x].src=eval(y+'.src'); 
   }
}

// -->