<!-- 
if(document.images) {
pics = new Array(); 
pics[1] = new Image();
pics[1].src = "../art/jplhome_grey.gif";  // home
pics[2] = new Image();
pics[2].src = "../art/jplhome_blue.gif";  // home

pics[3] = new Image();
pics[3].src = "../art/earth_grey.gif";   // earth
pics[4] = new Image();
pics[4].src = "../art/earth_blue.gif";      // earth

pics[5] = new Image();
pics[5].src = "../art/solarsystem_grey.gif";   // solar system
pics[6] = new Image();
pics[6].src = "../art/solarsystem_blue.gif";      // solar system
pics[7] = new Image();
pics[7].src = "../art/starsgalaxies-grey.gif";   // stars and galaxies
pics[8] = new Image();
pics[8].src = "../art/starsgalaxies-blue.gif";      // stars and galaxies
pics[9] = new Image();
pics[9].src = "../art/technology_grey.gif";   // Technology
pics[10] = new Image();
pics[10].src = "../art/technology_blue.gif";     // Technology
}

function changer(from,to) {
if(document.images) {
document.images[from].src = pics[to].src;
}
}
//-->