function mouseOver (mid, impath) {
  MM_swapImage('image' + mid,'', impath + 'nevigator/images/nevigator.option.hover' + mid + '.gif', 1);
}


function mouseOut (mid, impath) {
  MM_swapImage('image' + mid,'', impath + 'nevigator/images/nevigator.option.blank' + mid + '.gif', 1);
}



function preLoad (mid, impath) {
  MM_preloadImages (impath + 'nevigator/images/nevigator.option.hover' + mid + '.gif');
}