hResize = function (){
var body_h = $('top').getSize();
$('box0').setStyle("height", body_h.y + "px");
var t_height = $('box0').getSize();
$('wrapper').setStyle("height", t_height.y + "px"); 
}
window.addEvent('domready',function(){
	setInterval ("hResize();", 100);
});