572d30e2___Penn_State_Altoona_Bookstore_NOLOGY_ACCESSIBILITY_STANDARDS_Section_508_Rule
[EITAS] 1194.22(j) [Category] Web-based Intranet and Internet Information and Applications [Supporting Features] Supports. Web-based pages do not use elements that flash or blink at frequencies greater than 2 Hz and less than 55 Hz. [Summary of Supported] Supports [Section 508 Rule] 
Pages shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz.
BN College - Penn State Altoona Bookstore
Section 508 Rule