function roomnav()
   {
   var w = document.navigation.selectroom.selectedIndex;
   var url_add = document.navigation.selectroom.options[w].value;
   window.location.href = url_add;
   }

function catnav()
   {
   var w = document.navigation.selectcat.selectedIndex;
   var url_add = document.navigation.selectcat.options[w].value;
   if(w!=0) {window.location.href = url_add;}
   }  
function shopnav()
   {
   var w = document.navigation.selectshop.selectedIndex;
   var url_add = document.navigation.selectshop.options[w].value;
   window.location.href = url_add;
   }
function shelfnav()
   {
   var w = document.navigation.selectshelf.selectedIndex;
   var url_add = document.navigation.selectshelf.options[w].value;
   window.location.href = url_add;
   }
function brandnav()
   {
   var w = document.navigation.selectbrand.selectedIndex;
   var url_add = document.navigation.selectbrand.options[w].value;
   window.location.href = url_add;
   }
   
function bscatnav()
   {
   var w = document.catnav.selectcat.selectedIndex;
   var url_add = document.catnav.selectcat.options[w].value;
   if(w!=0) {window.location.href = url_add;}
   }