var imageFiles_vs_31 = new Array();
imageFiles_vs_31['0'] = new Array ('_images/vs_Home.gif', '_images/vs_HomeMouseover.gif');
imageFiles_vs_31['1'] = new Array ('_images/vs_Contact_Us.gif', '_images/vs_Contact_UsMouseover.gif');
imageFiles_vs_31['2'] = new Array ('_images/vs_Support_NAFSC.gif', '_images/vs_Support_NAFSCMouseover.gif');
imageFiles_vs_31['3'] = new Array ('_images/vs_NAFSC_Calendar.gif', '_images/vs_NAFSC_CalendarMouseover.gif');

function image_on_vs_31 (position) {
   var doc = eval("document.imagevs_31" + position);
   doc.src = imageFiles_vs_31[position][1];
}

function image_off_vs_31 (position) {
   var doc = eval("document.imagevs_31" + position);
   doc.src = imageFiles_vs_31[position][0];
}