var ps_img = new Image(); ps_img.src = "/images/nav_photo.gif";

var ps_hi = new Image(); ps_hi.src = "/images/nav_photo_hi.gif";

var pb_img = new Image(); pb_img.src = "/images/nav_bundles.gif";

var pb_hi = new Image(); pb_hi.src = "/images/nav_bundles_hi.gif";

var ga_img = new Image(); ga_img.src = "/images/nav_aperture.gif";

var ga_hi = new Image(); ga_hi.src = "/images/nav_aperture_hi.gif";	

var vp_img = new Image(); vp_img.src = "/images/nav_video.gif";

var vp_hi = new Image(); vp_hi.src = "/images/nav_video_hi.gif";

var ds_img = new Image(); ds_img.src = "/images/nav_demos.gif";

var ds_hi = new Image(); ds_hi.src = "/images/nav_demos_hi.gif";

var gl_img = new Image(); gl_img.src = "/images/nav_gallery.gif";

var gl_hi = new Image(); gl_hi.src = "/images/nav_gallery_hi.gif";	

var fs_img = new Image(); fs_img.src = "/images/nav_support.gif";

var fs_hi = new Image(); fs_hi.src = "/images/nav_support_hi.gif";



var logo_img = new Image(); logo_img.src = "/images/logo.gif";

var logo_hi = new Image(); logo_hi.src = "/images/logo_hi.gif";

var store_img = new Image(); store_img.src = "/images/store.gif";

var store_hi = new Image(); store_hi.src = "/images/store_hi.gif";



var blog_img = new Image(); blog_img.src = "/images/blog.gif";

var blog_hi = new Image(); blog_hi.src = "/images/blog_hi.gif";

var flickr_img = new Image(); flickr_img.src = "/images/flickr.gif";

var flickr_hi = new Image(); flickr_hi.src = "/images/flickr_hi.gif";

var forum_img = new Image(); forum_img.src = "/images/forum.gif";

var forum_hi = new Image(); forum_hi.src = "/images/forum_hi.gif";

var contact_img = new Image(); contact_img.src = "/images/contact.gif";

var contact_hi = new Image(); contact_hi.src = "/images/contact_hi.gif";



function change_img(this_img, img){

	if (this_img.src != img.src) this_img.src = img.src;

}



function menu_on (ele, nav_img) {

	ele.className = 'hover';

	var this_img = document.getElementById(nav_img);

	this_img.src = eval(nav_img + "_hi.src");

}

function menu_off (ele, nav_img) {

	ele.className = '';

	if (window.section && section == nav_img) return;

	var this_img = document.getElementById(nav_img);

	this_img.src = eval(nav_img + "_img.src");

}