function highlightElement(elementId){
  var elementId_01 = document.getElementById('top_'+elementId);
  var elementId_02 = document.getElementById('column_content_'+elementId);  
  elementId_01.style.backgroundColor='#ececec';
  elementId_02.style.backgroundColor='#ececec';
}

//function unHighlightElement(elementId){
//  var elementId_01 = document.getElementById('top_'+elementId);
//  var elementId_02 = document.getElementById('column_content_'+elementId);
//  elementId_01.style.backgroundColor='#ffffff';
//  elementId_02.style.backgroundColor='#ffffff';
//}


//function unHighlightAll(){
//  for (var x=1;x<4;x++){
//    var element_01 = document.getElementById('top_0'+x);
//    var element_02 = document.getElementById('column_content_0'+x);
//    element_01.style.backgroundColor='#ffffff';
//    element_02.style.backgroundColor='#ffffff';
//  }
//}


function unHighlightAll(){
  for (var x=1;x<4;x++){
    document.getElementById('top_0'+x).style.backgroundColor='#ffffff';
    document.getElementById('column_content_0'+x).style.backgroundColor='#ffffff';
  }
}