function getElementsByClassName(className){
	var testClass = new RegExp("(^|\\s)" + className + "(\\s|$)");
	var elements = document.getElementsByTagName("*");
	var returnElements = [];
	var current;
	var length = elements.length;
	for(var i=0; i<length; i++)
	{
		current = elements[i];
		if(testClass.test(current.className))
		{
			returnElements.push(current);
		}
	}
	return returnElements;
}


function addSpan()
{
	var elements = getElementsByClassName('addSpan');
	var length = elements.length;
	var current;
	var newNode;
	for(var i=0; i<length; i++)
	{
		current = elements[i];
		try
		{
			newNode = document.createElement('span');
			current.appendChild(newNode);
		}
		catch (e) {alert(e)}
	}
}