<!--
function Is ()
{
    var agt = navigator.userAgent.toLowerCase();

    this.created = true;

    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);

    this.nav = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1)));
    this.nav2 = (this.nav && (this.major == 2));
    this.nav3 = (this.nav && (this.major == 3));
    this.nav4 = (this.nav && (this.major == 4));

    //Netscape 6
    this.nav5 = (this.nav && (this.major == 5));
    this.nav6 = (this.nav && (this.major == 5));
    this.gecko = (this.nav && (this.major >= 5));

    this.ie    = (agt.indexOf('msie') != -1);
    this.ie3 = (this.ie && (this.major == 3));
    this.ie4 = (this.ie && (this.major == 4));
    this.ie5 = (this.ie && (this.major == 5));

    this.opera = (agt.indexOf('opera') != -1);

    this.nav4up = this.nav && (this.major >= 4);
    this.ie4up = this.ie  && (this.major >= 4);
}

var is = new Is();
loaded = 1;

function showpic(lay)
{
    if(loaded == 0)return false;
    if(is.ie4up) document.all(lay).style.visibility = 'visible';
    else if(is.gecko) document.getElementById(lay).style.visibility = 'visible';        
    // else document.layers[lay].visibility='show';
}

function hidepic(lay)
{
    if(loaded==0)return false;
    if(is.ie4up)document.all(lay).style.visibility = 'hidden';
    else if(is.gecko) document.getElementById(lay).style.visibility = 'hidden';
    // else document.layers[lay].visibility='hide';
}
//-->