<!-- Hide from older browsers

if (document.images) {
	jplnav1off = new Image();
	jplnav1off.src = "images/nav_jpl_home.gif"
	jplnav1on = new Image();
	jplnav1on.src = "images/nav_jpl_home-over.gif"

	jplnav2off = new Image();
	jplnav2off.src = "images/nav_earth.gif"
	jplnav2on = new Image();
	jplnav2on.src = "images/nav_earth-over.gif"

	jplnav3off = new Image();
	jplnav3off.src = "images/nav_solar_system.gif"
	jplnav3on = new Image();
	jplnav3on.src = "images/nav_solar_system-over.gif"

	jplnav4off = new Image();
	jplnav4off.src = "images/nav_stars_and_galaxies.gif"
	jplnav4on = new Image();
	jplnav4on.src = "images/nav_stars_and_galaxies-over.gif"   
   
 	jplnav5off = new Image();
	jplnav5off.src = "images/nav_technology.gif"
	jplnav5on = new Image();
	jplnav5on.src = "images/nav_technology-over.gif"   
}

// Unhide -->