ns4 = (document.layers)? true : false
ie4 = (document.all)   ? true : false

var navimgoff = new Array('/panweb/res/images/homepage.jpg','/panweb/res/images/products.jpg','/panweb/res/images/aboutus.jpg','/panweb/res/images/contactus.jpg','/panweb/res/images/sitemap.jpg','/panweb/res/images/customerlogin.jpg', '/panweb/res/images/services.jpg');
var navimgon  = new Array('/panweb/res/images/homepage_gs.jpg','/panweb/res/images/products_gs.jpg','/panweb/res/images/aboutus_gs.jpg','/panweb/res/images/contactus_gs.jpg','/panweb/res/images/sitemap_gs.jpg','/panweb/res/images/customerlogin_gs.jpg', '/panweb/res/images/services_gs.jpg');
var navcur = 0;

var imgcache = new Array();
function imgpreload(obj, src) 
{
  eval('imgcache[' + obj + '] = new Image()');
	eval('imgcache[' + obj + '].src = "' + src + '"' );
}

function imgcacheget(img) 
{
  if (imgcache[img])
    return eval('imgcache[' + img + '].src');
  else
    return "images/home01_alternative.jpg";
}

function filter_apply(obj) 
{
	if (document.all && document.all[obj].filters)
	  document.all[obj].filters[0].Apply();
}

function filter_play(obj) 
{
	if (document.all && document.all[obj].filters)
	  document.all[obj].filters[0].Play();
}

function navimg_over(i) 
{
 // filter_apply('navimg');
  document.getElementById('navimg').src = navimgon[i];
  //filter_play('navimg');
}

function navimg_reset() 
{
 // filter_apply('navimg');
  document.getElementById('navimg').src = navimgoff[navcur];
 // filter_play('navimg');
}

function navimg_init() 
{
  for (var i=0; i<navimgon.length; i++)
		imgpreload(i,navimgon[i]);
  navimg_reset();
}