function open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}

function preload_img()
{ 
  var img_list = na_preload_img.arguments;
  if (document.preloadlist == null) 
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length; i++) {
    document.preloadlist[top+i] = new Image;
    document.preloadlist[top+i].src = img_list[i+1];
  } 
}

function change_img_src(name, nsdoc, rpath, preload)
{ 
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img) {
    img.altsrc = img.src;
    img.src = rpath;
  } 
}

function restore_img_src(name, nsdoc)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img && img.altsrc) {
    img.src = img.altsrc;
    img.altsrc = null;
  } 
}

function toSpoil(id)
{
var hiddenDiv;
hiddenDiv = id.parentNode.getElementsByTagName('div')[0];
if ( hiddenDiv.className  == 'hidden' )
{ hiddenDiv.className = 'showed'; }
else
{ hiddenDiv.className = 'hidden'; }
}

function hideDiv() {
if (document.getElementById) {
document.getElementById('hideshow').style.visibility = 'hidden';
}
else {
if (document.layers) {
document.hideshow.visibility = 'hidden';
}
else {
document.all.hideshow.style.visibility = 'hidden';
}
}
}

function showDiv() {
if (document.getElementById) {
document.getElementById('hideshow').style.visibility = 'visible';
}
else {
if (document.layers) {
document.hideshow.visibility = 'visible';
}
else {
document.all.hideshow.style.visibility = 'visible';
}
}
}