Bloqueando reload page

// slight update to account for browsers not supporting e.which
function disableF5(e) { if ((e.which || e.keyCode) == 116) e.preventDefault(); };
// To disable f5
    /* jQuery < 1.7 */
$(document).bind("keydown", disableF5);
/* OR jQuery >= 1.7 */
$(document).on("keydown", disableF5);

// To re-enable f5
    /* jQuery < 1.7 */
$(document).unbind("keydown", disableF5);
/* OR jQuery >= 1.7 */
$(document).off("keydown", disableF5);