function song(){
	var uls = document.getElementsByTagName('ul');
	var myUl = [];
	var liActive = [];
	var input = [];
	var label = [];
	var lis = [];
	
	for (var i=0;i<uls.length;i++){
		if ((' '+uls[i].className+' ').indexOf(' song ') != -1){myUl.push(uls[i]);}
	}
	for (var i=0;i<myUl.length;i++){
		lis = myUl[i].getElementsByTagName('li');
		input = myUl[i].getElementsByTagName('input');
		label = myUl[i].getElementsByTagName('label');
	}
	for (var i=0;i<lis.length;i++){
		label[i].onclick = function(){
			for (var j=0;j<label.length;j++){
				lis[j].className = lis[j].className.replace(/\bactive\b/gi,"");
				//this.parentNode.className = this.parentNode.className.replace(/\bactive\b/gi,"");
			}
			this.parentNode.className += ' active';
		}
		input[i].onclick = function(){
			for (var j=0;j<input.length;j++){
				lis[j].className = lis[j].className.replace(/\bactive\b/gi,"");
				//this.parentNode.className = this.parentNode.className.replace(/\bactive\b/gi,"");
			}
			this.parentNode.className += ' active';
		}
	}
}
window.onload = song;