/*
	Form validation
*/

function isFilled(field) {
	if (field.value.length < 1 || field.value == field.defaultValue) {
		return false;
	} else {
		return true;
	}
}

function isEmail(emailAddress) {
	emailAddressValue=emailAddress.value.toLowerCase();
	var countryTLDs=/^(ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)$/;
	var gTLDs=/^(aero|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org)$/;
	var basicAddress=/^(.+)@(.+)$/;
	var specialChars='\\(\\)><@,;:\\\\\\\"\\.\\[\\]';
	var validChars='\[^\\s'+specialChars+'\]';
	var validCharset='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\'-_.';
	var quotedUser='(\"[^\"]*\")';
	var atom=validChars+'+';
	var word='('+atom+'|'+quotedUser+')';
	var validUser=new RegExp('^'+word+'(\.'+word+')*$');
	var symDomain=new RegExp('^'+atom+'(\.'+atom+')*$');
	var matchArray=emailAddressValue.match(basicAddress);

	if(emailAddress.value==''||emailAddress==null){
		return true;
	}

	if(matchArray==null){
		alert('The Email address doesn\'t seem to be correct,\nplease check syntax.');
		emailAddress.focus();
		return false;
	} else {
		var user=matchArray[1];
		var domain=matchArray[2];

		for(i=0;i<user.length;i++)	{
			if(validCharset.indexOf(user.charAt(i))==-1)	{
				alert('The Email address contains invalid characters,\nplease check the username.');
				emailAddress.focus();
				return false;
			}
		}

		for(i=0;i<domain.length;i++) {
			if(validCharset.indexOf(domain.charAt(i))==-1) {
				alert('The Email address contains invalid characters,\nplease check the domain.');
				emailAddress.focus();
				return false;
			}
		}

		if(user.match(validUser)==null) {
			alert('The Email address doesn\'t seem to be correct,\nplease check the username.');
			emailAddress.focus();
			return false;
		}

		var atomPat=new RegExp('^'+atom+'$');
		var domArr=domain.split('.');
		var len=domArr.length;

		for(i=0;i<len;i++) {
			if(domArr[i].search(atomPat)==-1) {
				alert('The Email address doesn\'t seem to be correct,\nplease check the domain name.');
				emailAddress.focus();
				return false;
			}
		}

		if((domArr[domArr.length-1].length==2)&&(domArr[domArr.length-1].search(countryTLDs)==-1))	{
			alert('The Email address doesn\'t seem to be correct,\nplease check domain suffix.');
			emailAddress.focus();
			return false;
		}

		if((domArr[domArr.length-1].length>2)&&(domArr[domArr.length-1].search(gTLDs)==-1)) {
			alert('The Email address doesn\'t seem to be correct,\nplease check domain suffix.');
			emailAddress.focus();
			return false;
		}

		if((domArr[domArr.length-1].length<2)||(domArr[domArr.length-1].length>6)) {
			alert('The Email address doesn\'t seem to be correct,\nplease check domain suffix.');
			emailAddress.focus();
			return false;
		}

		if(len<2) {
			alert('The Email address doesn\'t seem to be correct,\nplease check missing hostname.');
			emailAddress.focus();
			return false;
		}
	}
	return true;
}

function capitalize(obj) {
    val = obj.value.split(' ');
    for (var c=0; c < val.length; c++) {
        val[c] = val[c].substring(0,1).toUpperCase() + val[c].substring(1,val[c].length);
    }
    return val.join(' ');
}

function splitName(form) {
    full_name = capitalize(document.getElementById('name')).split(' ');
    last_name = full_name.pop();
    first_name = full_name.join(' ');
    if (first_name == '') {
        first_name = last_name;
        last_name = '';
    }
    document.getElementById('FIRSTNAME_FIELD').value = first_name;
    document.getElementById('LASTNAME_FIELD').value = last_name;
}

function splitNameInto(form_number) {
    full_name = capitalize(document.getElementById('name_' + form_number)).split(' ');
    last_name = full_name.pop();
    first_name = full_name.join(' ');
    if (first_name == '') {
        first_name = last_name;
        last_name = '';
    }
    document.getElementById('FIRSTNAME_FIELD_' + form_number).value = first_name;
    document.getElementById('LASTNAME_FIELD_'  + form_number).value = last_name;
}

function validateForm(whichform) {
	for (var i=0; i<whichform.elements.length; i++) {
		var element = whichform.elements[i];
		if (element.className.indexOf("required") != -1 || element.parentNode.className.indexOf('required') != -1) {
			if (!isFilled(element)) {
				alert("Please fill in the "+element.id+" field.");
				return false;
			}
		}
		if (element.className.indexOf("email") != -1) {
			if (!isEmail(element)) {
				return false;
			}
		}
	}
	return true;
}


String.prototype.trim = function() { return this.replace(/^\s*(\b.*\b|)\s*$/, "$1"); }

function mandatoryText(input,fieldName) {
	if(input.value.trim()==''||input==null) {
		alert('Please enter your '+fieldName+'.');
		input.focus();
		return false;
	} else {
		return true;
	}
}

function validForm(){
	if(!mandatoryText(document.getElementById('FIRSTNAME_FIELD'), 'Firstname')) return;
	if(!mandatoryText(document.getElementById('LASTNAME_FIELD'), 'Lastname')) return;
	if(!mandatoryText(document.getElementById('EMAIL_FIELD'), 'Email')) return;
	if(!isEmail(document.getElementById('EMAIL_FIELD'))) return;
	document.getElementById('emvForm').submit();
}