//FUNCIONES POPUP ========================================================

var newWindow;		
function openPopup(page, width, height) {
	if (newWindow){
		newWindow.close();
	}				
	var features = "toolbar=no,directories=no,menubar=no,status=no,width=" + width + ",height=" + height;
	newWindow = window.open(page,'ventana1',features);
}

function openPopupFeatures(page, width, height,features) {
	if (newWindow){
		newWindow.close();
	}				
	features += ",width=" + width + ",height=" + height;
	newWindow = window.open(page,'ventana1',features);
}			
		
function abrepop(pp)
  {
		window.open(pp,'Popup_agenda','resizable=yes,scrollbars=yes,location=no,status=no,menubar=no,toolbar=no,width=400,height=400,top=0,left=300');
  }
function abrepopc(pp)
  {
		window.open(pp,'Popup_comentarios','resizable=yes,scrollbars=yes,location=no,status=no,menubar=no,toolbar=no,width=400,height=400,top=0,left=300');
  }  


// Return 0 if string is less than or equal to specified length, else return -1
function compareLength(str, len)
{
	strlen = str.length;
	if ( strlen <= len ) {
		return 0;
	} else {
		return -1;
	}	
}

// Show a warning if the str is longer than the specified length
function checkLength(str, len, fieldname)
{
	if (compareLength(str, len) == 0)
		return true;
	else
	{
		alert("El texto escrito es demasiado grande.\nSe cortará a " + len + " caracteres");
		return false;
	}
}

// Set the specified form field to the instr, truncated to the specified length
function setField(instr, len, fieldname, obj)
{
	outstr = instr.substring(0,len);
	obj.form.elements[fieldname].value = outstr;	
}


//======================================== FORMULARIO CONTACTO =====

function seleccionatodo(nomForm)
{
	var texto="";

	if (document.forms[nomForm].nombre.value=="")
	{
		alert("Por favor, introduzca su nombre.");
		document.forms[nomForm].nombre.select();
		document.forms[nomForm].nombre.focus();
                return false; 
	}
	else
	{
		if (document.forms[nomForm].email.value=="")
		{
			alert("Por favor, introduzca su dirección de correo.");
			document.forms[nomForm].email.select();
			document.forms[nomForm].email.focus();
                        return false;
		}
		else
		{
			if ((document.forms[nomForm].email.value.indexOf("@")==-1)||(document.forms[nomForm].email.value.indexOf(".")==-1))
			{
				alert("La dirección de correo introducida no es correcta. Por favor, inténtelo de nuevo.");
				document.forms[nomForm].email.select();
				document.forms[nomForm].email.focus();
                                return false;
			}
			else
			{
				if (document.forms[nomForm].comentario.value=="")
				{
					alert("Por favor, introduzca su comentario.");
					document.forms[nomForm].comentario.select();
					document.forms[nomForm].comentario.focus();
                                        return false;
				}
				else
				{
					texto = "NOMBRE: " + document.forms[nomForm].nombre.value + "\n";
					texto = texto + "EMAIL: " + document.forms[nomForm].email.value + "\n";
					texto = texto + "COMENTARIO: " + document.forms[nomForm].comentario.value;
				}
			}
		}
	}
}

// ==== BUSCADOR =========================================================
function validateForm()
{
        var campo_busqueda = document.searchform.campo_busqueda.value;
        if (campo_busqueda=="") {
                alert("Introduzca la cadena que desea buscar");
            return false;
        } else {document.searchform.submit();}
}

// === Imagenes precargadas =============================================

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_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_findObj(n, d) { //v3.0
  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); 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];}
}