var divHeights = new Array();
	divHeights['box1'] = 374;
	divHeights['box2'] = 470;	

	function s1(v){
		id = 'box1';
		s(id, v);
	}

	function s(id, v){
		divHeight = divHeights[id];
		var b = document.getElementById(id);
		if (v > 1) v = 1;
		newHeight = v * (b.scrollHeight - divHeight);
		//alert(newHeight);
		b.scrollTop = newHeight;
	}