function togglePreview(imageID)
{
	var els = getElementsByClass('jnPopper');
	
	for (i=0;i<els.length;i++)
	{
		var previewImage = els[i];
		//previewImage.style.display = "none";
		//commented out this line, what the heck is it for? -AP
	}


	var previewImage = document.getElementById(imageID);
	previewImage.style.display = (previewImage.style.display == "block") ? "none" : "block";
}


function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}