var bookmarkurl = "http://www.escritoriosdebenfica.com/"
	var bookmarktitle = document.title

	function addfav(){
		if (document.all)
		window.external.AddFavorite(bookmarkurl,bookmarktitle)
}

function EW_openWindow(theURL, winName, popW, popH)
{
	if (document.all || document.layers)
	{
		w = screen.availWidth;
   		h = screen.availHeight;
	}
	
	var leftPos = (w-popW)/2;
	var topPos = (h-popH)/2;

//toolbar=yes,location=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=420,height=400
	window.open(theURL, winName, 'scrollbars=no, width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos);
}

function check_field()
{
	if(!document.formulario.email.value)
	{	
		alert("Insira um endereço de email válido.");
		document.formulario.email.focus();
		return(false);
	}
	
	window.open('', 'form_page','width=400,height=400');
	return(true);
}