function maxHeight(id, ie, ff) {
	if (navigator.appName == "Microsoft Internet Explorer") {
		var size_max = document.body.clientHeight-ie;
		document.getElementById(id).style.height = size_max+"px";
	} else {
		var size_max = document.body.clientHeight-ff;
		document.getElementById(id).style.height = size_max+"px";
	}
}