var imageFiles_19_40 = new Array();
imageFiles_19_40['0'] = new Array ('_images/19_Clean_up.gif', '_images/19_Clean_upMouseover.gif');

function image_on_19_40 (position) {
   var doc = eval("document.image19_40" + position);
   doc.src = imageFiles_19_40[position][1];
}

function image_off_19_40 (position) {
   var doc = eval("document.image19_40" + position);
   doc.src = imageFiles_19_40[position][0];
}