//functions for font-scaling 

function fn_FontSize(size) {
	//set the font size
	document.getElementById("textContent").className = size;
	//change the display
	var fs = document.getElementById("fontScale");
	var imgs = fs.getElementsByTagName("img");
	for (i=0;i<imgs.length;i++) {
		var e = imgs[i];
		if (e.id) {
			if (e.id == 'fs' + size) {
				e.className = 'selected';
			} else {
				e.className = '';
			}
		}
	}
}