browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if(browserVer >= 3)
    version = "3";
else
    version = "2";

if (version == "3") {
    bul_on=new Image(11,11); bul_on.src="img/bul_menu-active.gif";
    bul_off=new Image(11,11); bul_off.src="img/bul_menu.gif";

    sbul_on=new Image(11,33); sbul_on.src="img/bul_submenu-active.gif";
    sbul_off=new Image(11,33); sbul_off.src="img/bul_submenu.gif";
}

function bulOn(name) {
    if (version == "3") {
	    document[name].src=eval("bul_on.src");
    }
}

function bulOff(name) {
    if (version == "3") {
	document[name].src=eval("bul_off.src");
    }
}

function sbulOn(name) {
    if (version == "3") {
	    document[name].src=eval("sbul_on.src");
    }
}

function sbulOff(name) {
    if (version == "3") {
	document[name].src=eval("sbul_off.src");
    }
}