function	chgImage(obj) {
	var		path	= new Array();
	var		file	= "";
	iobj		= document.getElementById("contents");
	iobj.children[0].src	= obj.href;
	return	false;
}
function	tglMenu(objName) {
	mobj		= document.getElementById(objName) ;
	if (mobj.style.display == "none") {
		mobj.style.display = "block";
	} else {
		mobj.style.display = "none";
	}
}