function Is() {
    var agent = navigator.userAgent.toLowerCase();
    var version = parseInt(navigator.appVersion);
    this.ns = ((agent.indexOf('mozilla') != -1) && ((agent.indexOf('spoofer') == -1) && (agent.indexOf('compatible') == -1)));
    this.ns4 = (this.ns && (version >= 4));
    this.ie = (agent.indexOf("msie") != -1);
    this.ie3 = (this.ie && (version == 2));
    this.ie4 = (this.ie && (version >= 4));
}
var is = new Is();

var UseFlash = false;
if (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] ) {
    // Check for Flash version 5 or greater in Netscape
    var plugin = navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin;
    if (plugin && parseInt(plugin.description.substring(plugin.description.indexOf(".")-1))>=5) {
        UseFlash = true;
    }
} else if (navigator.appName && navigator.appName.indexOf("Microsoft") != -1 &&
    navigator.userAgent.indexOf("Windows") != -1 && navigator.userAgent.indexOf("Windows 3.1") == -1) {
    // Assume any Windows IE except for Windows 3.1 supports the OBJECT tag
    UseFlash = true;
}

function preload() {
    this.length = preload.arguments.length;
    for (var i = 0; i < this.length; i++) {
        this[i+1] = new Image();
        this[i+1].src = preload.arguments[i];
    }
}

function imgOn(i) {
    if (is.ie3) {} else {
        var src = document.images[i].src;
        var off = src.lastIndexOf("-off");
        if (off != -1) {
            var newsrc = src.substring(0,off) + "-on" + src.substring(off + 4, src.length);
            document.images[i].src = newsrc;
        }
    }
}

function imgOff(i) {
    if (is.ie3) {} else {
        var src = document.images[i].src;
        var on = src.lastIndexOf("-on");
        if (on != -1) {
            var newsrc = src.substring(0,on) + "-off" + src.substring(on + 3, src.length);
            document.images[i].src = newsrc;
        }
    }
}


function opWin(url,nam,w,h,k) {
    specs = "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no,scrollbars=" + k + ",width=" + w + ",height=" + h
    window.open(url,nam,specs)
}