var scroller = new UvumiScrollbar("scrollbar-demo");
var scroller2 = new UvumiScrollbar("scrollbar-demo2");

window.addEvent('domready',function(){
	$('download-form').addEvent('submit',function(){
		return this.getElements('input[type=checkbox]').some(function(input){
			return input.getProperty('checked');
		});
	});
	
	$('hideParagraphs').addEvent('click',function(){
		$$('.tohide').setStyle('display','none');
		scroller.update();
	});
	$('hideParagraphs2').addEvent('click',function(){
		$$('.tohide, .tohide2').setStyle('display','none');
		scroller.update();
	});
	$('hideParagraphs3').addEvent('click',function(){
		$$('.tohide3').setStyle('display','none');
		scroller.update();
	});
	$('showParagraphs').addEvent('click',function(){
		$$('.tohide, .tohide2, .tohide3').setStyle('display','block');
		scroller.update();
	});
});