var imageFiles_6a_1 = new Array();
imageFiles_6a_1['0'] = new Array ('_images/6a_Home.gif', '_images/6a_HomeMouseover.gif');
imageFiles_6a_1['1'] = new Array ('_images/6a_About_Us.gif', '_images/6a_About_UsMouseover.gif');
imageFiles_6a_1['2'] = new Array ('_images/6a_Services.gif', '_images/6a_ServicesMouseover.gif');
imageFiles_6a_1['3'] = new Array ('_images/6a_Contact_Us.gif', '_images/6a_Contact_UsMouseover.gif');

function image_on_6a_1 (position) {
   var doc = eval("document.image6a_1" + position);
   doc.src = imageFiles_6a_1[position][1];
}

function image_off_6a_1 (position) {
   var doc = eval("document.image6a_1" + position);
   doc.src = imageFiles_6a_1[position][0];
}