var imageFiles_px_1 = new Array();
imageFiles_px_1['0'] = new Array ('_images/px_Teen_Group.gif', '_images/px_Teen_GroupMouseover.gif');

function image_on_px_1 (position) {
   var doc = eval("document.imagepx_1" + position);
   doc.src = imageFiles_px_1[position][1];
}

function image_off_px_1 (position) {
   var doc = eval("document.imagepx_1" + position);
   doc.src = imageFiles_px_1[position][0];
}