var imageFiles_31_1 = new Array();
imageFiles_31_1['0'] = new Array ('_images/31_HOME.gif', '_images/31_HOMEMouseover.gif');
imageFiles_31_1['1'] = new Array ('_images/31_ABOUT_US.gif', '_images/31_ABOUT_USMouseover.gif');
imageFiles_31_1['2'] = new Array ('_images/31_SERVICES.gif', '_images/31_SERVICESMouseover.gif');

function image_on_31_1 (position) {
   var doc = eval("document.image31_1" + position);
   doc.src = imageFiles_31_1[position][1];
}

function image_off_31_1 (position) {
   var doc = eval("document.image31_1" + position);
   doc.src = imageFiles_31_1[position][0];
}