// JavaScript Document

function getElementsByClassName (classname, node) {
	if(!node) node = document.getElementsByTagName("body")[0];
	var a = [];
	var re = new RegExp('\\b' + classname + '\\b');
	var els = node.getElementsByTagName("*");
	for(var i=0,j=els.length; i<j; i++)
	if(re.test(els[i].className))a.push(els[i]);
	return a;
}

function styleCName () {
	var cnames = getElementsByClassName('cname');
	for (i=0; i<cnames.length; i++) {
		cnames[i].innerHTML='<span class="lightblue">Your</span> A<span class="blue">2</span>Z</span>';
	}
}