var imageFiles_bx_31 = new Array();
imageFiles_bx_31['0'] = new Array ('_images/bx_Fan_Lights.gif', '_images/bx_Fan_LightsMouseover.gif');

function image_on_bx_31 (position) {
   var doc = eval("document.imagebx_31" + position);
   doc.src = imageFiles_bx_31[position][1];
}

function image_off_bx_31 (position) {
   var doc = eval("document.imagebx_31" + position);
   doc.src = imageFiles_bx_31[position][0];
}