// JavaScript Document

function removeElement(parentDiv, childDiv){
     if (childDiv == parentDiv) {
          alert("The parent div cannot be removed.");
     }
     else if (document.getElementById(childDiv)) {     
		var child = document.getElementById(childDiv);
		var parent = document.getElementById(parentDiv);
		
		// move all child outside of the remnoved element
		while (child.firstChild){
			child.parentNode.insertBefore(child.firstChild,child);
		}
		
		parent.removeChild(child);
     }
     else {
          alert("Child div has already been removed or does not exist.");
          return false;
     }
}