<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function validacampos(){
if (document.newsletter.last_name.value ==""){
 	alert("Insira o seu nome");
	document.newsletter.last_name.focus();
	return false;
	}
else if (document.newsletter.email.value !=""){
	if (ValidaEmail(document.newsletter.email.value)== false){
		alert("Insira um email correcto");
		document.newsletter.email.focus();
		return false;
		}
	}
else if (document.newsletter.email.value ==""){
 	alert("Insira o seu email");
	document.newsletter.email.focus();
	return false;
	}
}

function ValidaEmail(_email) 
{ 
	var splitted = _email.match("^(.+)@(.+)$"); 

	if(splitted == null) return false; 
	if(splitted[1] != null ) 
	{ 
		var regexp_user=/^\"?[\w-_\.]*\"?$/; 
		
		if(splitted[1].match(regexp_user) == null) return false; 
	} 
	if(splitted[2] != null) 
	{ 
		var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/; 
		
		if(splitted[2].match(regexp_domain) == null) 
		{ 
			var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/; 
	
			if(splitted[2].match(regexp_ip) == null) return false; 
		}
		return true; 
	} 
	return false; 
}
//-->