var imageFiles_6t_4 = new Array();
imageFiles_6t_4['0'] = new Array ('_images/6t_EMERGENCY_SERVICES.gif', '_images/6t_EMERGENCY_SERVICESMouseover.gif');

function image_on_6t_4 (position) {
   var doc = eval("document.image6t_4" + position);
   doc.src = imageFiles_6t_4[position][1];
}

function image_off_6t_4 (position) {
   var doc = eval("document.image6t_4" + position);
   doc.src = imageFiles_6t_4[position][0];
}