var imageFiles_q4_40 = new Array();
imageFiles_q4_40['0'] = new Array ('_images/q4_Telescopes.gif', '_images/q4_TelescopesMouseover.gif');

function image_on_q4_40 (position) {
   var doc = eval("document.imageq4_40" + position);
   doc.src = imageFiles_q4_40[position][1];
}

function image_off_q4_40 (position) {
   var doc = eval("document.imageq4_40" + position);
   doc.src = imageFiles_q4_40[position][0];
}