// JavaScript Document
function clearElementContents(id){
	
	var elem = document.getElementById(id);
	
	while(elem.childNodes.length > 0){
		elem.removeChild(elem.firstChild);	
	}
}

function replaceContentWithText(id, str){
	var txt = document.createTextNode(str);
	clearElementContents(id);
	document.getElementById(id).appendChild(txt);
}