var imageFiles_4i_21 = new Array();
imageFiles_4i_21['0'] = new Array ('_images/4i_Location.gif', '_images/4i_LocationMouseover.gif');

function image_on_4i_21 (position) {
   var doc = eval("document.image4i_21" + position);
   doc.src = imageFiles_4i_21[position][1];
}

function image_off_4i_21 (position) {
   var doc = eval("document.image4i_21" + position);
   doc.src = imageFiles_4i_21[position][0];
}