function changecss(obj, stl) {
	if (obj != null) {
		switch (stl) {
			case "on":	obj.style.border = "1px solid #12493d";
						obj.style.backgroundColor = "#ffffff";
						obj.style.color = "#12493d";
						break;
			case "off": obj.style.border = "1px solid #9f9f9f";
						obj.style.backgroundColor = "#f0f0f0";
						obj.style.color = "#5f5f5f";
						break;
		} // if
	} // switch
} // changecss