function getElementsByClassName(className, tag, elm){
	var testClass = new RegExp("(^|\\s)" + className + "(\\s|$)");
	var tag = tag || "*";
	var elm = elm || document;
	var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	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;
}
// JScript File
function addCaption(xClass) {
var allImages = getElementsByClassName(xClass, "img", document);
for ( var i=0; i < allImages.length; i++) {
var imageCaption = document.createTextNode(allImages[i].title);
var imageContainer = document.createElement("div");
var imagePara = document.createElement("p");
var imageWidth = allImages[i].getAttribute("width");
var spareSpan = document.createElement("span");
imagePara.appendChild(imageCaption);
allImages[i].parentNode.insertBefore(imageContainer, allImages[i]);
imageContainer.appendChild(allImages[i]);
if ( allImages[i].title != "" ) {
imageContainer.appendChild(imagePara);
}
imageContainer.appendChild(spareSpan);
imageContainer.className = xClass
spareSpan.className = "spareSpan"
allImages[i].className = "img"
imageContainer.style.width = imageWidth + "px";
}
}