// expand/collapse block level elements
// fukyu1 yk Dec14 2007

function show_all() {
	for (i = 1; i < 101; i++) {
		var expacollap = document.getElementById('e_c'+i);
		expacollap.style.display = 'block';
	}
}
function hide_all() {
	for (i = 1; i < 101; i++) {
		var expacollap = document.getElementById('e_c'+i);
		expacollap.style.display = 'none';
	}
}
function ec(i) {
	var expacollap = document.getElementById('e_c'+i);
	if (expacollap.style.display == 'none') {
		expacollap.style.display = 'block';
	} else {
		expacollap.style.display = 'none';
	}
}