function insertAfter(newElement, targetElement) {
	var parent = targetElement.parentNode;
	if (parent.lastChild == targetElement) {
		parent.appendChild(newElement);
	}
	else{
		parent.insertBefore(newElement, targetElement.nextSibling);
	}
}

function addClass (element, value) {
	if (!element.className) {
		element.className = value;
	}
	else {
		newClassName = element.className + " " + value;
		element.className = newClassName;
	}
}

function addLoadEvent(func) {
  	var oldonload = window.onload;
 	 if (typeof window.onload != 'function') {
 		window.onload = func;
	  }
	  else {
   			window.onload = function() {
   		   oldonload();
   		   func();
  	  }
 	 }
}