// simple switcher

function collapse(t) {
    tag = document.getElementById(t);
  	if (tag.style.display == 'block') {
				tag.style.display = 'none';				
                tag.parentNode.style.display = 'block';
		} else {			
				 tag.style.display = 'block';               
			   tag.parentNode.style.display = 'block';
		}
}