preloadImages('images/nav_button01.gif','images/nav_button02.gif','images/nav_button03.gif','images/nav_button04.gif','images/nav_button05.gif','images/nav_button06.gif','images/nav_button07.gif','images/nav_button08.gif')

function preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function popup(mylink, windowname)
{
    if (! window.focus)return true;
    var href;
    if (typeof(mylink) == 'string')
        href=mylink;
    else
        href=mylink.href;
    window.open(href, windowname, 'width=800,height=500,menubar=yes,scrollbars=yes');
    return false;
}