var imageFiles_a4_55 = new Array();
imageFiles_a4_55['0'] = new Array ('_images/a4_Our_Mission.gif', '_images/a4_Our_MissionMouseover.gif');
imageFiles_a4_55['1'] = new Array ('_images/a4_Our_Service_Area.gif', '_images/a4_Our_Service_AreaMouseover.gif');
imageFiles_a4_55['2'] = new Array ('_images/a4_Goodwill_News_Events.gif', '_images/a4_Goodwill_News_EventsMouseover.gif');
imageFiles_a4_55['3'] = new Array ('_images/a4_Contact_Us.gif', '_images/a4_Contact_UsMouseover.gif');

function image_on_a4_55 (position) {
   var doc = eval("document.imagea4_55" + position);
   doc.src = imageFiles_a4_55[position][1];
}

function image_off_a4_55 (position) {
   var doc = eval("document.imagea4_55" + position);
   doc.src = imageFiles_a4_55[position][0];
}