function mouse_over(dhid)
    {
        for(i=1;i<=7;i++)
        {
            if(document.getElementById("Pv"+dhid).className!="click")
            {
                document.getElementById("Pv"+dhid).className='moren';
            }
        }
        document.getElementById("Pv"+dhid).className='over';
    }
    function mouse_out(dhid)
    {
        document.getElementById("Pv"+dhid).className='moren';
    }
    function mouse_click(dhid)
    {
        for(i=1;i<=7;i++)
        {            
           document.getElementById("Pv"+dhid).className='click';            
        }
    }