var obj1;
    var obj2;
    var ida;
function active(id){
    obj2 = document.getElementById(id);
    ida=id+'a';
    obj1= document.getElementById(ida);
    obj1.style.background='url(\'smarty/images/link_back1.png\') no-repeat scroll right top';
    obj1.style.padding='0px 0px 0px 0px';
    obj1.style.margin='0px 0px 6px 0px';
    obj2.style.background='url(\'smarty/images/link_back0.png\') no-repeat scroll left top transparent';
}
function unactive(id){
    obj2 = document.getElementById(id);
    ida=id+'a';
    obj1= document.getElementById(ida);
    obj1.style.background='';
    obj1.style.padding='0px 13px 0px 13px';
    obj2.style.background='';
}