var imageFiles_636_1 = new Array();
imageFiles_636_1['0'] = new Array ('_images/636_Home.gif', '_images/636_HomeMouseover.gif');
imageFiles_636_1['1'] = new Array ('_images/636_About_US.gif', '_images/636_About_USMouseover.gif');
imageFiles_636_1['2'] = new Array ('_images/636_History.gif', '_images/636_HistoryMouseover.gif');
imageFiles_636_1['3'] = new Array ('_images/636_Contact_Info.gif', '_images/636_Contact_InfoMouseover.gif');
imageFiles_636_1['4'] = new Array ('_images/636_Online_Catalog.gif', '_images/636_Online_CatalogMouseover.gif');

function image_on_636_1 (position) {
   var doc = eval("document.image636_1" + position);
   doc.src = imageFiles_636_1[position][1];
}

function image_off_636_1 (position) {
   var doc = eval("document.image636_1" + position);
   doc.src = imageFiles_636_1[position][0];
}