var winW = 630, winH = 150;

if (parseInt(navigator.appVersion)>3) 
{
   if (navigator.appName=="Netscape") 
   {
      winW = (window.innerWidth - 360);
      winSH = (window.innerHeight - 453);
      winPH = (window.innerHeight - (winSH + 80));
    }
    if (navigator.appName.indexOf("Microsoft")!=-1)
    {
        winW = (document.body.offsetWidth - 360);
        winSH = (document.body.offsetHeight - 453);
        winPH = (document.body.offsetHeight - (winSH + 80));

    }
}

if (winH < 150)
{
 winH = 150;
}

document.write('<style>.postoverflow{width: '+winW+'px; overflow: auto;} </style><style>.sigoverflow{width: '+winW+'px; max-height: '+winSH+'px; overflow: hidden;}</style>');