function showimg(n) {
switch (n)
{
     case '1': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_1.gif)'; break;
     case '2': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_2.gif)'; break;
     case '3': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_3.gif)'; break;
     case '4': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_4.gif)'; break;
     case '5': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_5.gif)'; break;
     case '6': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_6.gif)'; break;
     case '7': document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_link_active_7.gif)'; break;
    }
}

function hideimg(n) {
document.getElementById('top_links').style.backgroundImage = 'url(/images/top_menu_links.gif)';
}

function active(n) {
switch (n)
	{
     case '1': document.getElementById('active').className = 'active_1'; break;
     case '2': document.getElementById('active').className = 'active_2'; break;
	 case '3': document.getElementById('active').className = 'active_3'; break;
     case '4': document.getElementById('active').className = 'active_4'; break;
	 case '5': document.getElementById('active').className = 'active_5'; break;
     case '6': document.getElementById('active').className = 'active_6'; break;
	 case '7': document.getElementById('active').className = 'active_7'; break;
    }
}