body { font-size: 83.33%; } /* 1.2em = 16px */

/*	SHOW/HIDE */
a.font-size-normal { display: none; }
a.font-size-medium { display: block; background-position: 0 -32px; }
a.font-size-large { display: none; }
a.font-size-huge { display: block; background-position: 0 0; }
a.font-size-medium:hover { background-position: -16px -32px; }
a.font-size-huge:hover { background-position: -16px 0; }