//check for browser rollover capability
browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);
if (browser_name == "Netscape" && browser_version < 3.0)
{
     roll = 'false';
}
else if (browser_name == "Netscape" && browser_version >= 3.0)
{
     roll = 'true';
}
else if (browser_name == "Microsoft Internet Explorer" && browser_version < 4.0)
{
     roll = 'false';
}
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0)
{
     roll = 'true';
}
else
{
     roll = 'false';
}
//end browser check

//rollover image preload
if (roll == 'true')
{
//global navigation preload
     a_on = new Image(22,441);
     a_on.src = "img/nav_onas_1.jpg";
     a_off = new Image(22,441);
     a_off.src = "img/nav_onas.jpg";
     b_on = new Image(22,441);
     b_on.src = "img/nav_apteka_1.jpg";
     b_off = new Image(22,441);
     b_off.src = "img/nav_apteka.jpg";
     c_on = new Image(22,441);
     c_on.src = "img/nav_gabinet_1.jpg";
     c_off = new Image(22,441);
     c_off.src = "img/nav_gabinet.jpg";
     d_on = new Image(22,441);
     d_on.src = "img/nav_kontakt_1.jpg";
     d_off = new Image(22,441);
     d_off.src = "img/nav_kontakt.jpg";
     e_on = new Image(22,441);
     e_on.src = "img/nav_promocje_1.jpg";
     e_off = new Image(22,441);
     e_off.src = "img/nav_promocje.jpg";
  
 
     picture6_off.src = "";	

	


				
 }

//rollover function for onmouseover
function img_act(imgName)
{
     if (roll == 'true')
     {
          imgOn = eval(imgName + "_on.src");
          document [imgName].src = imgOn;
     }
}

//rollover function for onmouseout
function img_inact(imgName)
{
     if (roll == 'true')
     {
          imgOff = eval(imgName + "_off.src");
          document [imgName].src = imgOff;
     }
}

//swapping function for onmouseover
function img_swap(dest_imgName,src_imgName)
{
     if (roll == 'true')
     {
          src_imgOn = eval(src_imgName + "_on.src");
          document [dest_imgName].src = src_imgOn;
     }
}