var Browser = {
  Version: function() {
    var version = 999; // we assume a sane browser
    if (navigator.appVersion.indexOf("MSIE") != -1)
      // bah, IE again, lets downgrade version number
      version = parseFloat(navigator.appVersion.split("MSIE")[1]);
    return version;
  }
}

var timeout         = 500;
var closetimer		= 0;
var ddmenuitem      = 0;

// fungsi dropdown menu
function jsddm_open() {
	jsddm_canceltimer();
	jsddm_close();
	ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');
}
function jsddm_close() {
	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
}
function jsddm_timer() {
	closetimer = window.setTimeout(jsddm_close, timeout);
}
function jsddm_canceltimer() {
	if(closetimer) {
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}
// dom ready function
$(document).ready(function() {
	if (Browser.Version() <= 7) {
		$('#nav_wrap ul li ul').addClass("iestyle");
	}
	$('#nav_wrap ul li').bind('mouseover', jsddm_open);
	$('#nav_wrap ul li').bind('mouseleave',  jsddm_timer);
	
});

// nutup submenu ketika sembarang klik di window
document.onclick = jsddm_close;