var imageFiles_4_100 = new Array();
imageFiles_4_100['0'] = new Array ('_images/4_Locations_Contact_Us.gif', '_images/4_Locations_Contact_UsMouseover.gif');
imageFiles_4_100['1'] = new Array ('_images/4_About_Us.gif', '_images/4_About_UsMouseover.gif');
imageFiles_4_100['2'] = new Array ('_images/4_Our_Physicians.gif', '_images/4_Our_PhysiciansMouseover.gif');
imageFiles_4_100['3'] = new Array ('_images/4_Feedback.gif', '_images/4_FeedbackMouseover.gif');

function image_on_4_100 (position) {
   var doc = eval("document.image4_100" + position);
   doc.src = imageFiles_4_100[position][1];
}

function image_off_4_100 (position) {
   var doc = eval("document.image4_100" + position);
   doc.src = imageFiles_4_100[position][0];
}