// Load images
	theman = new Image;
	theman.src = "registration/images/man.gif";
	theman_on = new Image;
	theman_on.src = "registration/images/man_on.gif";
	thewoman = new Image;
	thewoman.src = "registration/images/woman.gif";
	thewoman_on = new Image;
	thewoman_on.src = "registration/images/woman_on.gif";
	age1 = new Image;
	age1.src = "registration/images/age1.gif";
	age1_on = new Image;
	age1_on.src = "registration/images/age1_on.gif";
	age2 = new Image;
	age2.src = "registration/images/age2.gif";
	age2_on = new Image;
	age2_on.src = "registration/images/age2_on.gif";
	age3 = new Image;
	age3.src = "registration/images/age3.gif";
	age3_on = new Image;
	age3_on.src = "registration/images/age3_on.gif";
	age4 = new Image;
	age4.src = "registration/images/age4.gif";
	age4_on = new Image;
	age4_on.src = "registration/images/age4_on.gif";
	age5 = new Image;
	age5.src = "registration/images/age5.gif";
	age5_on = new Image;
	age5_on.src = "registration/images/age5_on.gif";
	
	subbyeng = new Image;
	subbyeng.src = "registration/images/finger_buttup.gif";
	subbyeng_on = new Image;
	subbyeng_on.src = "registration/images/finger_button.gif";
		
	subby = new Image;
	subby.src = "registration/images/submit.gif";
	subby_on = new Image;
	subby_on.src = "registration/images/submit_on.gif";
	enviar = new Image;
	enviar.src = "registration/images/enviar.gif";
	enviar_on = new Image;
	enviar_on.src = "registration/images/enviar_on.gif";

	// Rollover function
	function changeImg(img, newImg) {
		if (document.images) {
			document[img].src = eval(newImg + ".src");
		}
	}


	// Check for name and email
	function checkForm() {
	//em_val = /^\w+@\w+(\.\w+?)/
		if (document.action.firstname.value == "") {
			alert("Por favor escribe tu nombre");
			document.action.firstname.focus();
		} else if (document.action.lastname.value == "") {
			alert("Por favor escribe tu apellido");
			document.action.lastname.focus();
		} else if (document.action.email.value == "") {
		       alert("Por favor introduce una dirección de correo.");
			document.action.email.focus();
		} else if (document.action.country.value == "") {
			alert("Por favor selecciona un país");
			document.action.country.focus();
		} else if (document.action.email.value.indexOf('@',0)==-1 || document.action.email.value.indexOf('@',0)== 0 || document.action.email.value.indexOf('.',0)==-1) {
		        alert("Por favor introduce una dirección de correo válida")
		    
		} else {
			document.action.submit();
				}
}


    function checkForm2() {
        document.reg.submit();
    }
   
    function checkActionForm() {    
        
	//em_val = /^\w+@\w+(\.\w+?)/
		if (document.action.name.value == "") {
			alert("please enter a name");
			document.action.name.focus();
			return false;
		} else if (document.action.firstname.value == "") {
			alert("please enter your first name");
			document.action.firstname.focus();
			return false;
		} else if (document.action.lastname.value == "") {
			alert("please enter your last name");
			document.action.lastname.focus();
			return false;
		} else if (document.action.email.value == "") {
			alert("please enter an email address");
			document.action.email.focus();
			return false;			
		} else if (document.action.country.value == "") {			
			alert("please select a country");
			document.action.country.focus();
			return false;
		} else if (document.action.email.value != "") {			
			return emailCheck(document.action.email.value);						
		} else {                        
			document.action.submit();
			return true;
		}
    }        
    
    
    function emailCheck (emailStr) {
        var emailPat=/^(.+)@(.+)$/
        var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
        var validChars="\[^\\s" + specialChars + "\]"
        var quotedUser="(\"[^\"]*\")"
        var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
        var atom=validChars + '+'
        var word="(" + atom + "|" + quotedUser + ")"
        // The following pattern describes the structure of the user
        var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
        var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

        var matchArray=emailStr.match(emailPat)

        //browser detection...
        var browser=navigator.appName;

        if (browser.indexOf("Netscape") < 0) {      

            if (matchArray==null) {
            /* Too many/few @'s or something; basically, this address doesn't
		 even fit the general mould of a valid e-mail address. */
		var errStr="Crikey!  The email address you typed has an error.\n\n"
		errStr += "_______________________________________________\n\n";
		errStr += "A valid email address has only one @ sign, at least one\n";
		errStr += "dot (.), no spaces and the @ is followed by more text \n";
		errStr += "_______________________________________________\n\n";
		errStr += "Please check what you typed and correct the error.\n";
		alert(errStr)
		return false
            }
            var user=matchArray[1]
            var domain=matchArray[2]
	
            // See if "user" is valid 
            if (user.match(userPat)==null) {
		// user is not valid
		var errStr="Whoops!  The email address you typed has an error.\n\n"
		errStr += "_______________________________________________\n\n";
		errStr += "A valid email address must have some characters \n";
		errStr += "before and after the @ sign.  \n";
		errStr += "_______________________________________________\n\n";
		errStr += "Please check what you typed and correct the error.\n";
		alert(errStr)
		return false
            }
	
            /* if the e-mail address is at an IP address (as opposed to a symbolic
	   host name) make sure the IP address is valid. */
            var IPArray=domain.match(ipDomainPat)
            if (IPArray!=null) {
		// this is an IP address
		  for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				var errStr="Shit!  The email address you typed has an error.\n\n"
				errStr += "_______________________________________________\n\n";
				errStr += "A valid email address with numbers after the @ sign\n";
				errStr += "must be in the form [255.255.255.255] \n";
				errStr += "_______________________________________________\n\n";
				errStr += "Please check what you typed and correct the error.\n";
				alert(errStr)
			return false
			}
		}
		return true
            }
	
            // Domain is symbolic name
            var domainArray=domain.match(domainPat)
            if (domainArray==null) {
		var errStr="Uh-oh!  The email address you typed has an error.\n\n"
		errStr += "_______________________________________________\n\n";
		errStr += "A valid email address must have characters \n";
		errStr += "after the @ sign. Most symbols are not valid, \n";
		errStr += "including spaces in the middle, beginning or end. \n";
		errStr += "_______________________________________________\n\n";
		errStr += "Please check what you typed and correct the error.\n";
		alert(errStr)
		return false
            }
	
	/* domain name seems valid, but now make sure that it ends in a
	   three-letter word (like com, edu, gov), a two-letter word, representing 
	   country (uk, nl) or a new four letter domain (info) and that there's a 
	   hostname preceding the domain or country. */
	
	/* Now we need to break up the domain to get a count of how many atoms
	   it consists of. */
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
		domArr[domArr.length-1].length>4) {
	   // the address must end in a two letter or three letter word.
	   var errStr="Oops!  The email address you typed has an error.\n\n"
	   errStr += "_______________________________________________\n\n";
	   errStr += "The address must end in a two, three or four letter domain,\n";
	   errStr += "or country code like: '.COM', '.INFO' or '.UK'\n";
	   errStr += "_______________________________________________\n\n";
	   errStr += "Please check what you typed and correct the error.\n";
	   alert(errStr)
	   return false
	}
	
	// Make sure there's a host name preceding the domain.
	if (len<2) {
	   var errStr="Yikes!  The email address you typed has an error.\n\n"
	   errStr += "_______________________________________________\n\n";
	   errStr += "A valid email address has at least three parts separated \n";
	   errStr += "by the @ symbol and dots like: yourname@yourhost.com \n";
	   errStr += "_______________________________________________\n\n";
	   errStr += "Please check what you typed and correct the error.\n";
	   alert(errStr)
	   return false
	}
	
	// If you've gotten this far, everything's valid!
	return true;
	}

    // closes the browser detection IF clause
    }



    // onSubmit open new popup script
    function openTarget (form, features, windowName) {
    	
        if (!windowName)
            windowName = 'formTarget' + (new Date().getTime());
            form.varOptin.value=varOptin;
            form.target = windowName;
            open ('', windowName, features);
    }