function states(id) {
	var navClass = this.document.getElementById(id).className;
	if (navClass == "off") {
		navClass="on";	
		this.document.getElementById(id).className=navClass;
		for (i=0;i<=12;i++) {
			alert(this.document.className[i]);
			if (this.document.className[i] == "on") {
				this.document.className[i] = "off";
			}
		}
	}
	else {
		return null;	
	}
}