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 setTab(tabGroup, tab){    
    var tabs = tabGroup.get('tabs');
    for (var i = 0; i < tabs.length; i++) {
        if (tabs[i].get('href') == '#tab' + tab) {
            tabGroup.set('activeIndex', i);
            break;
        }
    }
}