function showBlock(block) {
	divs = document.getElementById(block).parentNode.parentNode.getElementsByTagName('DIV');

	if(document.getElementById(block).style.display=='block') {
		document.getElementById(block).style.display='none';
	}	else {
		for(i=0; i<divs.length; i++) {
			if(divs[i].id.indexOf('block')!=-1) {
				divs[i].style.display='none';
			}
		}
		document.getElementById(block).style.display='block';
	}
}

function changeClass(block) {
	lis = document.getElementById(block).parentNode.parentNode.getElementsByTagName('LI');

	for(i=0; i<lis.length; i++) {
		divs = lis[i].getElementsByTagName('DIV');

		for(j=0; j<divs.length; j++) {
			if(divs[j].id.indexOf('block')!=-1) {
				if(divs[j].style.display=='block') {
					lis[i].className = "active";
				}
				else {
					lis[i].className = "";
				}
			}
		}
	}
}