/**
 * Função protype que pega os elementos 
 * por Id, TagName ou ClassName de um objeto.
 * 
 * @author Rafael R. Noronha
 * @since 10/04/2007
 * @return obj
 */
function $() {
	var elements = new Array();
	for (var i=0,len=arguments.length;i<len;i++) {
		var element = arguments[i];
		if (typeof element == 'string') {
			var matched = document.getElementById(element);
			if (matched) {
				elements.push(matched);
			} else {
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				var regexp = new RegExp('(^| )'+element+'( |$)');
				for (var i=0,len=allels.length;i<len;i++) if (regexp.test(allels[i].className)) elements.push(allels[i]);
			}
			if (!elements.length) elements = document.getElementsByTagName(element);
			if (!elements.length) {
				elements = new Array();
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				for (var i=0,len=allels.length;i<len;i++) if (allels[i].getAttribute(element)) elements.push(allels[i]);
			}
			if (!elements.length) {
				var allels = (document.all) ? document.all : document.getElementsByTagName('*');
				for (var i=0,len=allels.length;i<len;i++) if (allels[i].attributes) for (var j=0,lenn=allels[i].attributes.length;j<lenn;j++) if (allels[i].attributes[j].specified) if (allels[i].attributes[j].nodeValue == element) elements.push(allels[i]);
			}
		} else {
			elements.push(element);
		}
	}
	if (elements.length == 1) {
		return elements[0];
	} else {
		return elements;
	}
}