var current_layer;

current_layer=null;

if(document.images) {

scr_nav_main_practice_on = new Image;
scr_nav_main_practice_off = new Image;
scr_nav_main_work_on = new Image;
scr_nav_main_work_off = new Image;
scr_nav_main_portfolio_on = new Image;
scr_nav_main_portfolio_off = new Image;
scr_nav_main_clients_on = new Image;
scr_nav_main_clients_off = new Image;
scr_nav_main_news_on = new Image;
scr_nav_main_news_off = new Image;
scr_nav_main_careers_on = new Image;
scr_nav_main_careers_off = new Image;
scr_nav_main_contact_on = new Image;
scr_nav_main_contact_off = new Image;

scr_arrow_sml_on = new Image;
scr_arrow_sml_off = new Image;

scr_expertise_chararc_on = new Image;
scr_expertise_chararc_off = new Image;
scr_expertise_projman_on = new Image;
scr_expertise_projman_off = new Image;
scr_expertise_intedesi_on = new Image;
scr_expertise_intedesi_off = new Image;
scr_expertise_propsurv_on = new Image;
scr_expertise_propsurv_off = new Image;
scr_expertise_archtech_on = new Image;
scr_expertise_archtech_off = new Image;
scr_expertise_visuarti_on = new Image;
scr_expertise_visuarti_off = new Image;
scr_expertise_maintena_on = new Image;
scr_expertise_maintena_off = new Image;

scr_nav_main_practice_on.src = "../image/scr_nav_main_practice_on.gif";
scr_nav_main_practice_off.src = "../image/scr_nav_main_practice_off.gif";
scr_nav_main_work_on.src = "../image/scr_nav_main_work_on.gif";
scr_nav_main_work_off.src = "../image/scr_nav_main_work_off.gif";
scr_nav_main_portfolio_on.src = "../image/scr_nav_main_portfolio_on.gif";
scr_nav_main_portfolio_off.src = "../image/scr_nav_main_portfolio_off.gif";
scr_nav_main_clients_on.src = "../image/scr_nav_main_clients_on.gif";
scr_nav_main_clients_off.src = "../image/scr_nav_main_clients_off.gif";
scr_nav_main_news_on.src = "../image/scr_nav_main_news_on.gif";
scr_nav_main_news_off.src = "../image/scr_nav_main_news_off.gif";
scr_nav_main_careers_on.src = "../image/scr_nav_main_careers_on.gif";
scr_nav_main_careers_off.src = "../image/scr_nav_main_careers_off.gif";
scr_nav_main_contact_on.src = "../image/scr_nav_main_contact_on.gif";
scr_nav_main_contact_off.src = "../image/scr_nav_main_contact_off.gif";

scr_arrow_sml_on.src = "../image/scr_arrow_sml_on.gif";
scr_arrow_sml_off.src = "../image/scr_arrow_sml_off.gif";

scr_expertise_chararc_on.src = "../image/scr_expertise_characc_on.jpg";
scr_expertise_chararc_off.src = "../image/scr_expertise_characc_off.jpg";
scr_expertise_projman_on.src = "../image/scr_expertise_projman_on.jpg";
scr_expertise_projman_off.src = "../image/scr_expertise_projman_off.jpg";
scr_expertise_intedesi_on.src = "../image/scr_expertise_intedesi_on.jpg";
scr_expertise_intedesi_off.src = "../image/scr_expertise_intedesi_off.jpg";
scr_expertise_propsurv_on.src = "../image/scr_expertise_propsurv_on.jpg";
scr_expertise_propsurv_off.src = "../image/scr_expertise_propsurv_off.jpg";
scr_expertise_archtech_on.src = "../image/scr_expertise_archtech_on.jpg";
scr_expertise_archtech_off.src = "../image/scr_expertise_archtech_off.jpg";
scr_expertise_visuarti_on.src = "../image/scr_expertise_visuarti_on.jpg";
scr_expertise_visuarti_off.src = "../image/scr_expertise_visuarti_off.jpg";
scr_expertise_maintena_on.src = "../image/scr_expertise_maintena_on.jpg";
scr_expertise_maintena_off.src = "../image/scr_expertise_maintena_off.jpg";

}

function swapImage(f,n) {
  f = "document."+f;
  f = eval(f);
  n = eval(n);
  f.src = n.src;
}

function showHideLayer(t,sh) {
   if(document.getElementById) {
    layer_object = document.getElementById(t).style;
  } else {
    if(document.all) {
      layer_object = eval('document.all.'+t+'.style');
    }
  }
  if(sh == "show") {
    //alert("SHOW: "+layer_object);
    layer_object.visibility = "visible"; 
  } else {
    //alert("HIDE: "+layer_object);
    layer_object.visibility = "hidden";
  }

}

function showHideLayer_2(t) {
   if(document.getElementById) {
    layer_object = document.getElementById(t).style;
  } else {
    if(document.all) {
      layer_object = eval('document.all.'+t+'.style');
    }
  }

  layer_object.visibility = "visible";
  if(current_layer && (current_layer !== layer_object)) {
    current_layer.visibility = "hidden";
  }
  current_layer = layer_object;

}