var nav = navigator.userAgent;
nav = nav.toLowerCase();

var ie = false;
var mozilla = false;
var firefox = false;
var netscape = false;
var opera = false;

if (nav.indexOf('opera') >= 0) opera=true;
else if (nav.indexOf('msie') >= 0) ie=true;
else if (nav.indexOf('netscape') >= 0) netscape=true;
else if (nav.indexOf('firefox') >= 0) firefox=true;
else if (nav.indexOf('gecko') >= 0) mozilla=true;

// rollover
function get_image(v,path)
{
	v.src='img/'+path;
}

//открытие, сокрытие раздела меню
function show_hide(name,name2)
{
	var object = document.getElementById(name);
	var object2 = document.getElementById(name2);
	object.style.display = ( object.style.display == 'block' ) ? 'none' : 'block';
	object2.style.display = ( object.style.display == 'block' ) ? 'none' : 'block';
}