function menu_on(x){
 var y="menu"+x;
 document.getElementById(y).setAttribute('src','images/menu'+x+'_2.gif');
}
function menu_off(x){
 var y="menu"+x;
 document.getElementById(y).setAttribute('src','images/menu'+x+'_1.gif');
}
function close_win(){
	var nvua = navigator.userAgent;
		if(nvua.indexOf('MSIE') >= 0){
			if(nvua.indexOf('MSIE 5.0') == -1) {
				top.opener = '';
			}
		}
		else if(nvua.indexOf('Gecko') >= 0){
			top.name = 'CLOSE_WINDOW';
			wid = window.open('','CLOSE_WINDOW');
		}
	top.close();
}
function map_win(){
	window.open('map.html', 'map_window', 'width=580, height=650, menubar=no, toolbar=no, scrollbars=yes');
}