<!-- Hide from old browsers 
var browsertype=false;
if((navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)>=3)) browsertype=true;
if((navigator.appName=="Microsoft Internet Explorer")&&(parseInt(navigator.appVersion)>=4)) browsertype=true;

if (document.images) { 
img1on = new Image(); 
img1on.src = "nav/mainon.gif"; 
img2on = new Image(); 
img2on.src = "nav/specialson.gif";
img3on = new Image(); 
img3on.src = "nav/touron.gif"; 
img4on = new Image(); 
img4on.src = "nav/redon.gif"; 
img5on = new Image(); 
img5on.src = "nav/blueon.gif"; 
img6on = new Image(); 
img6on.src = "nav/queenon.gif"; 
img7on = new Image(); 
img7on.src = "nav/bookingson.gif"; 
img8on = new Image(); 
img8on.src = "nav/abouton.gif"; 
img9on = new Image(); 
img9on.src = "nav/historyon.gif"; 

img1off = new Image(); 
img1off.src = "nav/mainoff.gif"; 
img2off = new Image(); 
img2off.src = "nav/specialsoff.gif";
img3off = new Image(); 
img3off.src = "nav/touroff.gif";
img4off = new Image(); 
img4off.src = "nav/redoff.gif"; 
img5off = new Image(); 
img5off.src = "nav/blueoff.gif"; 
img6off = new Image(); 
img6off.src = "nav/queenoff.gif";
img7off = new Image(); 
img7off.src = "nav/bookingsoff.gif";
img8off = new Image(); 
img8off.src = "nav/aboutoff.gif";
img9off = new Image(); 
img9off.src = "nav/historyoff.gif";
} 

// activate 
function imgon (imgName) { 
if (document.images) { 
document[imgName].src = eval (imgName + "on.src") ; 

} 

} 

// deactivate 
function imgoff (imgName) { 
if (document.images) { 
document[imgName].src = eval(imgName + "off.src"); 
} 
} 

// -->