// JavaScript Document

function showExtend() {
	var s = document.getElementById("extendContent").style.display;
	if (s == "") {
				document.getElementById("extendContent").style.display = "none";
	} else {
				document.getElementById("extendContent").style.display = "";
	}
}
function hiddenExtend() {
	document.getElementById("extendContent").style.display= "none";
}