function init() {
 grow = new Animator().addSubject(new NumericalStyleSubject($('text'), 'height', 30, 40));
 
 $("text").onmouseover = function() { grow.seekTo(100);}
 $("text").onmouseout = function() { grow.seekTo(0);}
}

function $(el) {
 return document.getElementById(el);
}