function waitPreloadPage() 
{ //DOM
    if (document.getElementById)
    {
     document.getElementById('prepage').style.display='none';
     document.getElementById('myframe').style.display='block';
    }
    else
    {
        if (document.layers)
        { //NS4
            document.prepage.visibility = 'hidden';    
        }
        else 
        { //IE4
            document.all.prepage.style.display = 'none';
            document.all.myframe.style.display = 'block';
        }
    }
                
}