function trim(str) {
	return str.replace(/^\s+|\s+$/g, '');
}


function validateEmail(vfld){
	  var tfld = trim(vfld.value);
	  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/

	  if (tfld == "" || !email.test(tfld)) {
		  return false;
	  }
	  return true;
}

function checkPresent(str){
	if(trim(str) != ''){
		return true;
	}
	return false;
}


function checkLength(mystr, minlenght){
	var str = trim(mystr.value);

	if(str.length >= minlenght){
		return true;
	}
	return false;
}


function openPopup(image_name, image_width, image_height){
	var top = (screen.height - image_height) /2;
	var left = (screen.width - image_width) /2;
	window.open("inc/image_popup.php?file_name="+image_name,"picture","resizable=no, width="+image_width+", 	height="+image_height+", top="+top +", left="+left);
}

function showDialog(name)
{
	var dlgCommon = dojo.widget.byId(name);
	dlgCommon.show();
	hideFlashDivs();
	return true;
}

function hideDialog(name)
{
	showFlashDivs();
	var dlgCommon = dojo.widget.byId(name);
	dlgCommon.hide();
	return true;
}

function hideFlashDivs()
{
	var logo = dojo.byId('logo');
	var news = dojo.byId('news');
	var anim = dojo.byId('anim');
	if (logo != null) logo.style.display="none";
	if (news != null) news.style.display="none";
	if (anim != null) anim.style.display="none";
}

function showFlashDivs()
{
	var logo = dojo.byId('logo');
	var news = dojo.byId('news');
	var anim = dojo.byId('anim');
	if (logo != null) logo.style.display="block";
	if (news != null) news.style.display="block";
	if (anim != null) anim.style.display="block";
}

function show_div(id)
{
	if(document.getElementById(id)){
		document.getElementById(id).style.display ="block";
	}
}

function hide_div(id)
{
	if(document.getElementById(id)){
		document.getElementById(id).style.display ="none";
	}
}

//-------------------------------------------------------------------------------
// Check Browser
function loadBrowserCSS(id, path){

	var theUA = navigator.userAgent.toLowerCase();
	isExplorer = (theUA.indexOf('msie')!=-1);
	var posInicio = theUA.lastIndexOf('msie')+4;
	theversion = parseFloat(theUA.substring(posInicio, posInicio+4));
	
	if (isExplorer){
		//var link ='<link href="' + path + "styles_ie" + theversion + '.css" rel="stylesheet" type="text/css" id="IE_style" />';
		//document.write(path + "styles_ie" + theversion + '.css');
		/*
		if(document.getElementById(id)){
			document.write('Load Style');
			document.getElementById(id).href = path + "styles_ie"+theversion+".css";
		}
		*/
		
		var link = document.createElement('link');  
		link.href = path + "styles_ie" + theversion + '.css';  
		link.rel = 'stylesheet';  
		link.type = 'text/css';
		document.getElementsByTagName('head')[0].appendChild(link);

		//document.write(link);
		//alert(document.getElementById(id).href+"::");
	}
}

function showDialog(name)
{
	var dlgCommon = dojo.widget.byId(name);
	if(dlgCommon != null) dlgCommon.show();
	hideFlashDivs();
	return true;
}

function hideDialog(name)
{
	showFlashDivs();
	var dlgCommon = dojo.widget.byId(name);
	if(dlgCommon != null) dlgCommon.hide();
	return true;
}

function openTarget (form, features, windowName) {
  if (!windowName)
	windowName = 'formTarget' + (new Date().getTime());
  form.target = windowName;
  open ('', windowName, features);
}
function hideDiv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('hideShow').style.visibility = 'hidden';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideShow.visibility = 'hidden';
		}
		else { // IE 4
		document.all.hideShow.style.visibility = 'hidden';
		}
	}
}
function showDiv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('hideShow').style.visibility = 'visible';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideShow.visibility = 'visible';
		}
		else { // IE 4
			document.all.hideShow.style.visibility = 'visible';
		}
	}
}

//valida los campos en el formulario de contacto
//validates the fields of the contact form
//Aviso: los espacios al inicio del campo no son considerados error
//si el texto que lo sigue es valido al campo correspondiente
function checkFormContact()
{
	var incomplete_fields = ""; // almacena el listado de campos obligatorios vacíos
		var invalid_fields = "";//almacena la lista de campos con datos invalidos

		//OK
		//checkeo si el campo nombres esta vacío
		if( trim(document.getElementById('str_fname').value) == ""){
	  incomplete_fields = incomplete_fields + ' First Name' + '\n';}
	 //OK
		//checkeo si el campo apellido esta vacío
		if( trim(document.getElementById('str_lname').value) == ""){
		  incomplete_fields = incomplete_fields + ' Last Name' + ' \n';
		}

		//OK
		//checkeo si campo mail esta vacio ( dato no obligatorio ) verifico el dato ingresado
		if(trim(document.getElementById('str_email').value) != ""){
			   if (!validateEmail(document.getElementById('str_email').value)){
					 invalid_fields= invalid_fields + ' E-mail address \n';}
		}
		//OK
		//checkeo si campo telefono esta vacío , verifico validez de datos
		if(trim(document.getElementById('str_phone').value)==""){
				incomplete_fields = incomplete_fields + ' Phone number ' + '\n';
		}else  if(!validateTelnr(document.getElementById('str_phone').value)){
				 invalid_fields = invalid_fields + ' Phone Number \n'; }


	   //si el campo "tiempo de contacto" no esta vacio chekeo lo ingresado
	   //como no hay formato busco solo letras numeros y espacios
	   if(trim(document.getElementById('str_time').value)!=""){
			   if(!validateText(document.getElementById('str_time').value)){
				 invalid_fields = invalid_fields + ' Best contact time \n'; }
	   }


	   //OK
	  //checkeo si campo comentarios no vacío
	  //if( trim(document.getElementById('str_comments').value) ==""){ //Checkeo campo comentarios no vacio
		//   incomplete_fields = incomplete_fields + ' Comments';
	   // } else if(!validateText(document.getElementById('str_comments').value)){
		//         invalid_fields = invalid_fields + ' Comments \n';}

	  //Muestro mensajes de error en ventana emergente de campos o datos inválidos
	  if(incomplete_fields != ""){ //mensaje de alerta uno o mas campos vacios
			incomplete_fields = 'Please, complete following fields:\n' + incomplete_fields;
		alert(incomplete_fields);
		return false;
	}else if  ( invalid_fields !=""){
					invalid_fields= ' Following fields have wrong data \n' + invalid_fields;
					alert (invalid_fields);
					return false;

	}else return true;

}

function clearForm(){
	document.formContact.reset();
}