var imageFiles_m7_21 = new Array();
imageFiles_m7_21['0'] = new Array ('_images/m7_LIMOUSINE.gif', '_images/m7_LIMOUSINEMouseover.gif');
imageFiles_m7_21['1'] = new Array ('_images/m7_AIRPORT_SHUTTLE.gif', '_images/m7_AIRPORT_SHUTTLEMouseover.gif');

function image_on_m7_21 (position) {
   var doc = eval("document.imagem7_21" + position);
   doc.src = imageFiles_m7_21[position][1];
}

function image_off_m7_21 (position) {
   var doc = eval("document.imagem7_21" + position);
   doc.src = imageFiles_m7_21[position][0];
}