var agt = navigator.userAgent.toLowerCase();

var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);

var is_nav = ((agt.indexOf('mozilla') != -1) && (agt.indexOf('spoofer') == -1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) && (agt.indexOf('webtv') == -1));
var is_nav2 = (is_nav && (is_major == 2));
var is_nav3 = (is_nav && (is_major == 3));
var is_nav4 = (is_nav && (is_major == 4));
var is_nav4up = (is_nav && (is_major >= 4));
var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)));
var is_nav5 = (is_nav && (is_major == 5));
var is_nav5up = (is_nav && (is_major >= 5));

var is_ie = (agt.indexOf("msie") != -1);
var is_ie3 = (is_ie && (is_major < 4));
var is_ie4 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0") == -1));
var is_ie4up = (is_ie && (is_major >= 4));
var is_ie5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0") != -1));
var is_ie5up = (is_ie && !is_ie3 && !is_ie4);


var layer = new String();
var style = new String();
var i, current;
var running = 0;


if (is_nav5up) {
    style = ".style";
} else if (is_nav4) {
    layer = ".layers";
    style = "";
} else if (is_ie4up) {
    layer = ".all";
    style = ".style";
}

function rollover(name, n) {
    hidelayer();
    changeState(name, 'visible');
    //changecursor(n)
}

function rollOut(name) {

    var loImage;
    var chkImage;

    layerRef = name;
    if ((is_nav4) || (is_ie4up)) {
        lyr = "document" + layer + "['" + layerRef + "']" + style + ".visibility";
    } else if (is_nav5up) {
        lyr = "document.getElementById('" + layerRef + "').style.visibility";
    }
}


function changeState(layerRef, state) {
    if (is_nav5up) {
        evallayer = "document.getElementById('" + layerRef + "').style.visibility='" + state + "'";
    } else {
        evallayer = "document" + layer + "['" + layerRef + "']" + style + ".visibility='" + state + "'";
    }
    eval(evallayer);
}


function hidelayer() {
    if (is_nav5up) {
        eval("document.getElementById('menudiv_xh').style.visibility='hidden'");
        eval("document.getElementById('menudiv_qh').style.visibility='hidden'");
        eval("document.getElementById('menudiv_ty').style.visibility='hidden'");
        eval("document.getElementById('menudiv_tz').style.visibility='hidden'");
        eval("document.getElementById('menudiv_derx').style.visibility='hidden'");
        eval("document.getElementById('menudiv_fl').style.visibility='hidden'");
        eval("document.getElementById('menudiv_zs').style.visibility='hidden'");
        eval("document.getElementById('menudiv_zp').style.visibility='hidden'");
        eval("document.getElementById('menudiv_zx').style.visibility='hidden'");
        eval("document.getElementById('menudiv_vip').style.visibility='hidden'");
        eval("document.getElementById('menudiv_gq').style.visibility='hidden'");

    } else {
        eval("document" + layer + "['menudiv_xh']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_qh']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_ty']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_tz']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_derx']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_fl']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_zs']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_zp']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_zx']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_vip']" + style + ".visibility='hidden'");
        eval("document" + layer + "['menudiv_gq']" + style + ".visibility='hidden'");
    }
}
//function changecursor(n){
//	if (is_nav5up){
//		eval("document.getElementById('menu_cursor').style.width='"+n+"px'");
//		eval("document.getElementById('menu_cursor').style.width='"+n+"px'");
//	}else{	
//		eval("document"+layer+"['menu_cursor']"+style+".width='"+n+"px'");
//		eval("document"+layer+"['menu_cursor']"+style+".width='"+n+"px'");
//	}
//}
function interval(name) {
    switch (name) { 
    case "menu_blank":
    case "menu_xh":
    case "menu_qh":
    case "menu_ty":
    case "menu_tz":

    eval("document.getElementById(name).className = 'nav_a_out'");
    break;
    case "menu_zs":
    case "menu_fl":
    case "menu_zp":
    case "menu_zx":
    case "menu_vip":
    eval("document.getElementById(name).className = 'nav_a_out2'");
    break;

    }
}