var Panel1 = 
{
    timeout1 : null,
    showPanel : function(Div)
    {
        panel1 = document.getElementById(Div);
        clearTimeout(this.timeout1);
        if(panel1.style.visibility == '' || panel1.style.visibility == 'hidden')
        {
            panel1.style.visibility='visible';
        }
    },
    hidePanel : function(Div)
    {
        panel1 = document.getElementById(Div);
        if(panel1.style.visibility == '' || panel1.style.visibility == 'hidden')
        {
            setTimeout(function(){panel1.style.visibility='visible'}, 1);
        }
        else
        {
            this.timeout1 = setTimeout(function(){panel1.style.visibility='hidden'}, 1);
        }
    }
}