Testing the type of a DOM element in Javascript

function(event) {
  var element = event.element();
  // if element is and anchor
  ...
  // if element is a td
  ...
}

if (element.nodeName == "A")
{
}
else if (element.nodeName == "TD")
{
}

if(element.nodeType == 1){//element of type html-object/tag
  if(element.tagName=="a"){
    //this is an a-element
  }
  if(element.tagName=="div"){
    //this is a div-element
  }
}