function cambio_imagen(referenciaimagen,cambiopor){
	document.images[referenciaimagen].src = eval(cambiopor + ".src")
}

function desp_form(id_art){
	document.getElementById("sec_comment").value = "<form name='frmComentarios' id='frmComentarios'><table align='center' width='500' class='form_comentario'><tr><td width='240'><input class='textinput' name='nombre' id='nombre' type='text' size='40' maxlength='100'><input name='id' id='id' type='hidden' value='"+id_art+"'></td><td width='271' class='nom_campo'><strong>Nombre</strong> (Necesario)</td></tr><tr> <td><input class='textinput' name='e_mail' id='e_mail' type='text' size='40' maxlength='150'></td><td class='nom_campo'><strong>E-mail</strong> (opcional)</td></tr><tr><td align='left' colspan='2' style='font-size: 11px; font-style: Italic'><input type='checkbox' name='suscribir' value='1'>Suscribirse y recibir posteriores comentarios solo de este tema en E-mail</td></tr><td><input class='textinput' name='web' id='web' type='text' size='40' maxlength='150'></td><td class='nom_campo'><strong>Web</strong> (opcional)</td></tr><tr><td><input class='textinput' name='codigo' id='codigo' size='40' maxlength='8' type='text'></td><td><img src='include/publico/captcha.php?rand="+Math.random()+"' width='100' height='30' vspace='3' align='left'>Escribe el <b>c&oacute;digo</b> en el espacio</td></tr><tr><td colspan='2'><textarea class='textinput' name='comentario' id='comentario' cols='60' rows='10'></textarea></td></tr><tr> <td colspan='2' align='center'><input type='button' value='Enviar' onClick='ins_comment()'></td></tr></table></form>";
	variable = 	document.getElementById("sec_comment").value;
	document.getElementById("sec_comment").innerHTML = 	variable;
}

function cambiaestado(){
	if (XMLHttp.readyState == 4){
		document.getElementById("sec_comment").value = XMLHttp.responseText;
		variable = 	document.getElementById("sec_comment").value;
		document.getElementById("sec_comment").innerHTML = variable;
	}
}

function camest_contact(){
	if (XMLHttp.readyState == 4){
		document.getElementById("formulario").value = XMLHttp.responseText;
		variable = 	document.getElementById("formulario").value;
		document.getElementById("formulario").innerHTML = variable;
	}
}

function crearInstancia(){
	var XMLHttp = false;
	
	if (window.XMLHttpRequest){
		return new XMLHttpRequest();
	} else if (window.ActiveXObject){
		var versiones = ["Msxml2.XMLHTTP.7.0", "Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.5.0", "Msxml2.XMLHTTP.4.0", "Msxml2.XMLHTTP.3.0", "Msxml2.XMLHTTP", "microsoft.XMLHTTP"];
		for (var i = 0; i < versiones.length; i++){
			try {
				XMLHttp = new ActiveXObject(versiones[i]);
				if (XMLHttp){
					return XMLHttp;
					break;
				}
			}catch (e) {};
		}
	}		
}

function borra_email(){
	document.subscribe.email.value ="";
}

function cuenta_car(long_max, formulario, campo, campo_num_char){
	long_articulo = eval("document."+eval("formulario")+"."+eval("campo")+".value.length");	
	if (parseInt(long_articulo)<=long_max)
		eval("document."+eval("formulario")+"."+eval("campo_num_char")+".value = long_max - parseInt(long_articulo);");
	else{
		eval("cadena = document."+eval("formulario")+"."+eval("campo")+".value.substr(0,long_max);");
		eval("document."+eval("formulario")+"."+eval("campo")+".value = cadena;");
		eval("document."+eval("formulario")+"."+eval("campo_num_char")+".value = long_max - parseInt(long_articulo) + 1;");
	}
}

function limpia_cadena(cadena){
	var caracteres = new Array('Á', 'É', 'Í', 'Ó', 'Ú', 'á', 'é', 'í', 'ó', 'ú', 'ñ', 'à', 'è', 'ì', 'ò', 'ù', 'À', 'È', 'È', 'Ì', 'Ù', 'ç');
	var repl = new Array('Aacute;', 'Eacute;', 'Iacute;', 'Oacute;', 'Uacute;','aacute;', 'eacute;', 'iacute;', 'oacute;', 'uacute;', 'ntilde;','agrave;','egrave;','igrave;','ograve;','ugrave;' ,'Agrave;' ,'Egrave;' ,'Igrave;' ,'Ograve;' ,'Ugrave;', 'ccedil;');
	for (i=0; i<caracteres.length; i++){
		cadena = eval("cadena.replace(/"+caracteres[i]+"/g, repl[i]);");
	}
	return cadena;
}