/**********************************************************
 * Validação do formulário                                  *
 **********************************************************/

		function valida(){
			if(document.dados.nome.value.length<1){
				alert("Nome inválido!");
				return false;
			}
			oReg = /[A-Za-z0-9_.-]+@([A-Za-z0-9_]+\.)+[A-Za-z]{2,4}/;
			if(!oReg.test(document.dados.email.value)){
				alert("Email inválido!");
				return false;
			}
			return true;
		}
		
/**********************************************************
 * Popup das imagens                                  *
 **********************************************************/
 
 			var pagina_ativa=1;
			function cria_navegacao(){  
				var elems		=	document.getElementById("esq").getElementsByTagName("div").length-1;
				var contents	= "<ul><li>navegação</li>";
				for(var i=1; i<=elems; i++){
					if(i==pagina_ativa)
						contents += "<li>"+i+"</li>";
					else
						contents += "<li><a href=\"javascript:ativa_pagina("+i+");\">"+i+"</a></li>";
				}
				contents += "</ul>";
				document.getElementById("navegacao").innerHTML = contents;
			}
			function ativa_pagina(id){
				var elems = document.getElementById("esq").getElementsByTagName("div").length-1;
				for(var i=1; i<=elems; i++)
					document.getElementById("pagina_"+i).style.display = i==id ? "block" : "none";
				pagina_ativa = id;
				cria_navegacao();
			}
                        function abre_popup(e,dir){
                        	window.open("closeimg.php?dir="+dir+"&img="+e+"_g.jpg", "Galeria", "width=695,height=425,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no");
                        }