var imageFiles_h9_1 = new Array();
imageFiles_h9_1['0'] = new Array ('_images/h9_ORDER_ORTHO_K_LENS.gif', '_images/h9_ORDER_ORTHO_K_LENSMouseover.gif');

function image_on_h9_1 (position) {
   var doc = eval("document.imageh9_1" + position);
   doc.src = imageFiles_h9_1[position][1];
}

function image_off_h9_1 (position) {
   var doc = eval("document.imageh9_1" + position);
   doc.src = imageFiles_h9_1[position][0];
}