var imageFiles_77_4 = new Array();
imageFiles_77_4['0'] = new Array ('_images/77_Pics.gif', '_images/77_PicsMouseover.gif');

function image_on_77_4 (position) {
   var doc = eval("document.image77_4" + position);
   doc.src = imageFiles_77_4[position][1];
}

function image_off_77_4 (position) {
   var doc = eval("document.image77_4" + position);
   doc.src = imageFiles_77_4[position][0];
}