function colsheight()
{
   var front;
   var sub;
   //var rightheight;

   front   = document.getElementById("front").offsetHeight;
   sub     = document.getElementById("sub").offsetHeight;
   //rightheight  = document.getElementById("content-right").offsetHeight;


   var allheights  = new Array(front, sub);

   function Numsort(a,b)
   {
     return b-a;
   }
   allheights.sort(Numsort);
   
   
   document.getElementById("front").style.height   = allheights[0] + 'px';
   document.getElementById("sub").style.height = allheights[0] + 'px';
  // document.getElementById("content-right").style.height  = allheights[0] + 'px';


}