function estrutura(){
	var $ = function(vl){
		if(document.getElementById(vl)){
			return document.getElementById(vl);
		}else if(document.getElementsByName(vl)){
			return document.getElementsByName(vl);
		}
	}
	var utf8_encode = function(vl){
		return encodeURIComponent(vl);
	}
	this.mascara = function(Obj,Pvalue){
		Obj.onfocus = function(){
			if(Obj.value==Pvalue){
				Obj.value = '';
			}	
		}
		Obj.onblur = function(){
			if(Obj.value==''){
				Obj.value = Pvalue;
			}
		}
	}
	this.newsletter = function(){
		$('nwbt').onclick = function(){
			var ajx = new ajxQuery("ajx/?fx=3&email="+utf8_encode($('nwinput').value));
			ajx.setLoading(function(){
				$('nwbt').className = "displayNone";
				$('nwld').className = "s05c02cc04";
			});
			ajx.setRetorno(function(text,xml){
				$('nwld').className = "displayNone";
				$('nwok').className = "s05c02cc05";
			});
			ajx.conectar();	
		}
	}
	<!-- RSS -->
	var pubdateToBr = function(pubDate){
		var timestamp   = Date.parse(pubDate);
		var data_brasil = new Date(timestamp);
		var dia         = data_brasil.getDate();
		var mes         = data_brasil.getMonth()+1;
		var ano         = data_brasil.getFullYear();
		
		return dia+'.'+mes+'.'+ano;
	}
	var items;
	var start = 0;
	var limite = 4;
	this.rss = function()
	{
		var ajx = new ajxQuery("ajx/?fx=1");
		ajx.setLoading(function(){
			document.getElementById('ulRss').innerHTML = "";
		});
		ajx.setRetorno(function(text,xml){
			items = xml.getElementsByTagName('item').length
			if(start>=items){
				start = 0;
			}
			var posstart = start + limite;
			for(i=start;i<posstart;i++)
			{
				if(xml.getElementsByTagName('item')[i]){
					var titulo = xml.getElementsByTagName('item')[i].getElementsByTagName('title')[0].childNodes[0].data;
					var data = pubdateToBr(xml.getElementsByTagName('item')[i].getElementsByTagName('pubDate')[0].childNodes[0].data);
					var linka = xml.getElementsByTagName('item')[i].getElementsByTagName('link')[0].childNodes[0].data;
					
					var li = document.createElement('li');
					li.innerHTML = "<a target=\"_blank\" href=\""+linka+"\"><span>&bull;</span> <font>"+data+"</font> - "+titulo+"</a>";
					document.getElementById('ulRss').appendChild(li);
				}
			}
			start = posstart;
			
			document.getElementById('ldRss').className = "displayNone";
		});
		ajx.conectar();
	}
}