// $Id$
/** 
* Roll-over for menu buttons.
*/
function naPreloadImg()
{ 
  var imgList = naPreloadImg.arguments;
  if (document.preloadlist == null) 
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i = 0; i < imgList.length - 1; i++) {
    document.preloadlist[top + i] = new Image;
    document.preloadlist[top + i].src = imgList[i+1];
  } 
}

function naChangeImgSrc(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 naRestoreImgSrc(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;
  } 
};