objects = document.getElementsByTagName("object");
for (var i = 0; i < objects.length; i++)
{
    objects[i].outerHTML = objects[i].outerHTML;
}

function hiders(num)
{ 

  varname7 = "div7";
  varname8 = "div8";

 if (num == 7) 
     {document.getElementById("div7").style.display = 'block';
     document.getElementById("div8").style.display = 'none'
     }
   else
    {document.getElementById("div7").style.display = 'none';
     document.getElementById("div8").style.display = 'block'
     }

}