function getElementsByClass(etype, className){
	var	result = [],
		re = new RegExp("(^|\\s)" + className + "(\\s|$)"),
		elements = document.getElementsByTagName(etype),
		i = elements.length;
	while(i--) {
		if(re.test(elements[i].className))
			result.push(elements[i]);
	};
	result.reverse();
	return result;
};