/* =======================================
   Roll-over
======================================= */
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_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 MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

/* =======================================
   Header
======================================= */
function get_current_fname() {
    var s1 = '/';
    var s2 = '?';
    var full_path = '';
    var fname = '';

    full_path = location.href;
    if (full_path.lastIndexOf(s1) != -1) {
        fname = full_path.substring(full_path.lastIndexOf(s1)+1, full_path.length)
    }
    if (fname.lastIndexOf(s2) != -1) {
        fname = fname.substring(0, fname.lastIndexOf(s2)); 
    }
    return fname;
}

function header_redirect(folder) {
    /*
    This function is not yet finished.
    Now is not support for sub-folder cases.
    */
    var f = get_current_fname();
    window.open('../' + folder + '/' + f, '_self');
}



/* =======================================
   WWW Menu
======================================= */
function dummy() {
}
function m1_over(n, hv_sub) {
    close_all_submenu();
    if (hv_sub == 1) {
        document.getElementById('sub'+n).style.display = 'block';
    }
}
function m1_out(n) {
}
function m2_over(n) {
    document.getElementById('sub'+n).style.display = 'block';
}
function m2_out() {
    close_all_submenu();
}

function close_all_submenu() {
    for (i=1; i<=8; i++) {
        document.getElementById('sub'+i).style.display = 'none';
    }
}