function chPhoto (id) {
	var tmpid		= "";
	var pfile		= "";
	var flrfile		= "";
	if ((roomname != undefined) && (roomname != "") && (document.getElementById("photo")) && (document.getElementById("floor"))) {
		if (id != "") {
			for (var i = 1; i <= 5; i++) {
				tmpid		= "p" + i;
				if (document.getElementById(tmpid)) {
					if (id == tmpid) {
						pfile	= "../imgs2/room/" + roomname + "/point" + i + ".jpg";
						flrfile	= "../imgs2/room/" + roomname + "/floor" + i + ".gif";
						document.getElementById(tmpid).style.backgroundPosition = "left bottom";
						document.getElementById("photo").innerHTML	= "<img src=\"" + pfile + "\" width=\"382\" height=\"288\" alt=\"\" />";
						document.getElementById("floor").innerHTML	= "<img src=\"" + flrfile + "\" alt=\"\" usemap=\"#flrmap\" />";
					} else {
						document.getElementById(tmpid).style.backgroundPosition = "left top";
					}
				}
			}
		}
	}
	//alert(id+"\n"+pfile+"\n"+flrfile);
	return false;
}
/*
function chPhoto (id,file) {
	var tmpid		= "l";
	var targetid	= "p";
	if (document.getElementById("photo")) {
		if ((id != "") && (file != "")) {
			for (var i = 1; i <= 5; i++) {
				tmpid		= "l" + i;
				targetid	= "p" + i;
				if ((id == tmpid) || (id == targetid)) {
					document.getElementById(tmpid).style.backgroundPosition = "left bottom";
					document.getElementById(targetid).style.backgroundPosition = "left bottom";
				} else {
					document.getElementById(tmpid).style.backgroundPosition = "left top";
					document.getElementById(targetid).style.backgroundPosition = "left top";
				}
			}
			document.getElementById("photo").innerHTML	= "<img src=\"" + file + "\" width=\"382\" height=\"288\" alt=\"\" />";
		}
	}
	return false;
}
*/