// JavaScript Document

	function regresar(){
		
		history.back(-1);
		
	}//regresar
	
	function do_search(){
		
		var form = document.search;
		
		form.submit();
				
	}//do_search
	
	function verificar_opiniones(){
		var form = document.opiniones;
		
		if(form.nombre.value == ""){
			alert("Escriba el nombre");
			form.nombre.focus();
			return;		
		}//if
		
						
		if(form.email.value == ""){
			alert("Escriba el email");
			form.email.focus();
			return;		
		}//if
		
		if(!validar_email(form.email.value)){
			alert("Escriba un email válido");
			return;		
		}//if		
		
		if(form.txtCaptcha.value == ""){
			alert("Escriba el texto mostrado en la imágen");
			return;		
		}//if	
	
		form.submit();
	
	}//verificar_opiniones

	function validar_email(email){
	
		var patron = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
		if(email.search(patron) == 0){
			return true;
		}else{
			return false;
		}//
	
	}//valida_email