function filt_cat(){
    var sel = document.getElementById("cpage");
    var val=sel.options[sel.selectedIndex].value;

    location.href='http://webshop.kreativfun.ro/?page=prod_stoc&cat2='+val;
    /*location.href='http://localhost/kf/webshop/?page=prod_stoc&cat2='+val;*/

}