function getElementsByClassName(searchClass, node, tag){
  var classElements=[];
  node = node || document;
  var pattern = new RegExp('(^|\\s)' + searchClass+ '(\\s|$)');
  var els = (!tag &&  node.all) || node.getElementsByTagName(tag|| '*');
  var elsLen = els.length;
  for(var i=0, j=0;i<els.length;i++){
    if(pattern.test(els[i].className)){
      classElements[j] = els[i];
      j++;
    }
  }
  return classElements;
}

if(getElementsByClassName("teaserbox")){
	var divs = getElementsByClassName("teaserbox");
	//alert(divs.length);
	for(var i=0; i < divs.length; i++){
		if(i == (divs.length - 1)){
			//alert()
			divs[i].style.margin = '0';
		}
	}
}