
function showAllByTag(tagName,dispType) {
	var elements = document.getElementsByTagName(tagName);
	var i = 0;
	if (dispType == "") {
		dispType = inline;
	}
	while (i < elements.length) {
		elements[i].style.display = dispType;
		i++;
		}
}
function hideAllByTag(tagName) {
	var elements = document.getElementsByTagName(tagName);
	var i = 0;
	while (i < elements.length) {
		elements[i].style.display = "none";
		i++;
		}
}