function getQueryVariable(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  }
}      
        
        
function cmdResizeIfr()
{
            document.getElementById('ifr').src = document.getElementById('ifr').src + getQueryVariable('class');
            frames['iframe'].location.href = frames['ifr'].location.href + getQueryVariable('class');
}