function preload_menu(){
var newImg = new Image();
newImg.src = 'url(images2/cat_back_alt.jpg)';
var newImg = new Image();
newImg.src = 'url(images2/cat_bot_alt.jpg)';
}

function menu_change (id){
var alt = document.getElementById(id);
alt.style.background = 'url(images2/cat_back_alt.jpg)'; 
}
function menu_out (id){
var alt = document.getElementById(id);
alt.style.background = 'url(images2/cat_back.jpg)'; 
}
function menu_change_bot (id){
var alt = document.getElementById(id);
alt.style.background = 'url(images2/cat_bot_alt.jpg)'; 
}
function menu_out_bot (id){
var alt = document.getElementById(id);
alt.style.background = 'url(images2/cat_bot.jpg)'; 
}
function m_click (id){
if (id == 'm1'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/accessories/cat_69.html';
}
if (id == 'm2'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/basins/cat_9.html';
}
if (id == 'm3'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/bath-spouts/cat_202.html';
}
if (id == 'm4'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/baths-spas/cat_61.html';
}
if (id == 'm5'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/drainage/cat_201.html';
}
if (id == 'm6'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/heated-towel-rails-fans/cat_195.html';
}
if (id == 'm7'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/laundry/cat_219.html';
}
if (id == 'm8'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/shaving-and-storage/cat_217.html';
}
if (id == 'm9'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/showers/cat_58.html';
}
if (id == 'm10'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/sinks/cat_162.html';
}
if (id == 'm11'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/tapware-3-piece/cat_51.html';
}
if (id == 'm12'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/tapware-mixers/cat_128.html';
}
if (id == 'm13'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/toilet-suites/cat_18.html';
}
if (id == 'm14'){
window.location = 'http://www.bathroomwarehouse.com.au/products/browse-products/vanities/cat_10.html';
}
if (id == 'm15'){
window.location = 'http://www.bathroomwarehouse.com.au/vanity-builder/vanity_builder_entrance.php';
}

}