var imageFiles_rx_1 = new Array();
imageFiles_rx_1['0'] = new Array ('_images/rx__.gif', '_images/rx__Mouseover.gif');

function image_on_rx_1 (position) {
   var doc = eval("document.imagerx_1" + position);
   doc.src = imageFiles_rx_1[position][1];
}

function image_off_rx_1 (position) {
   var doc = eval("document.imagerx_1" + position);
   doc.src = imageFiles_rx_1[position][0];
}