function init() {
	sSheet = document.styleSheets[document.styleSheets.length-1];
	if ( document.defaultView.getComputedStyle(document.body,"").getPropertyValue("font-size") == "14px" ){
		sSheet.insertRule("body {font-size: 16px}",sSheet.cssRules.length);
	}
}

if ( document.defaultView && document.styleSheets ) window.onload = init;