var imageFiles_bw_40 = new Array();
imageFiles_bw_40['0'] = new Array ('_images/bw_Contempory.gif', '_images/bw_ContemporyMouseover.gif');

function image_on_bw_40 (position) {
   var doc = eval("document.imagebw_40" + position);
   doc.src = imageFiles_bw_40[position][1];
}

function image_off_bw_40 (position) {
   var doc = eval("document.imagebw_40" + position);
   doc.src = imageFiles_bw_40[position][0];
}