browserName = navigator.appName;
browserVer  = parseInt ( navigator.appVersion );
version     = "n2";

if ( browserName == "Netscape" && browserVer >= 3 )
    version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4 )
    version = "e4";

if ( version == "n3" || version == "e4" )
{
    ana_on      = new Image ( );
    ana_on.src  = "images/yanmenu/yanmenudegisken_24.gif";
    for_on      = new Image ( );
    for_on.src  = "images/yanmenu/yanmenudegisken_36.gif";
    tak_on      = new Image ( );
    tak_on.src  = "images/yanmenu/yanmenudegisken_40.gif";
    rek_on      = new Image ( );
    rek_on.src  = "images/yanmenu/yanmenudegisken_44.gif";
    fik_on      = new Image ( );
    fik_on.src  = "images/yanmenu/yanmenudegisken_50.gif";
	trc_on      = new Image ( );
    trc_on.src  = "images/yanmenu/yanmenudegisken_54.gif";
    eng_on      = new Image ( );
    eng_on.src  = "images/yanmenu/yanmenudegisken_58.gif";
	
    ana_off     = new Image ( );
    ana_off.src = "images/latino_yan_menu_24.gif";
    for_off     = new Image ( );
    for_off.src = "images/latino_yan_menu_37.gif";
    tak_off     = new Image ( );
    tak_off.src = "images/latino_yan_menu_43.gif";
    rek_off     = new Image ( );
    rek_off.src = "images/latino_yan_menu_49.gif";
    fik_off     = new Image ( );
    fik_off.src = "images/latino_yan_menu_59.gif";
	trc_off     = new Image ( );
    trc_off.src = "images/latino_yan_menu_65.gif";
	eng_off     = new Image ( );
    eng_off.src = "images/latino_yan_menu_71.gif";

}

function buttonust_on ( imgName )
{
    if ( version == "n3" || version == "e4" )
    {
        document [imgName].src  = eval ( imgName + "_on.src" );
    }
}

function buttonust_off ( imgName )
{
    if ( version == "n3" || version == "e4" )
    {
        document [imgName].src  = eval ( imgName + "_off.src" );
    }
}