function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}
document.getElementsByTagName('html')[0].className = 'js';

addLoadEvent(function(){
   
   var myLabel;
   var myInput;
   
   if (document.getElementById('newsletter')) {
      myLabel = document.getElementById('newsletter').getElementsByTagName('label')[0];
      myInput = document.getElementById('newsletter').getElementsByTagName('input')[0];
   }
   
   if (myLabel && myInput) {
      if (myInput.value != "") {
         myLabel.style.display = 'none';
      }
      myInput.onfocus = function(){
            myLabel.style.display = 'none';
         };
   
      myInput.onblur = function(){
            if (this.value == "") {
               myLabel.style.display = 'block';
            }
         };
   }
});