var imageFiles_4f_19 = new Array();
imageFiles_4f_19['0'] = new Array ('_images/4f_Tech_Support.gif', '_images/4f_Tech_SupportMouseover.gif');

function image_on_4f_19 (position) {
   var doc = eval("document.image4f_19" + position);
   doc.src = imageFiles_4f_19[position][1];
}

function image_off_4f_19 (position) {
   var doc = eval("document.image4f_19" + position);
   doc.src = imageFiles_4f_19[position][0];
}