function overMap(state,link_id){
    if (document.getElementById) {
        obj = document.getElementById(link_id)
        overLink(obj, state)
    }
}
function overLink(obj, state){
    if (document.getElementById) {
        if(state == 'on'){
              obj.className = "catlink2"
        } else {
              obj.className = "catlink"
        }
    }
}