function StripAlphaNumeric(vNumberString) {
	var alphaChars = "abcdefghijklmnopqrstuvwxyz~!@#$%^&*()_+`=-\"'\:;?/>. <,|";
	var strippedString = "";
	for (i=0; i<vNumberString.toLowerCase().length; i++) {
		if (alphaChars.lastIndexOf(vNumberString.charAt(i)) == -1) {
			strippedString += vNumberString.charAt(i);
		}
	}
	return strippedString;
}

function FormatPhoneNumber(vNumberString) {
	// ASERTION: NO ALPHA-NUMERIC CHARACTERS; ALL NUMERIC
	vNumberString = StripAlphaNumeric(vNumberString);

	var vLength = vNumberString.length;
	
	var vFormattedNumber = "";
	if (vLength < 7 || (vLength > 7 && vLength < 10)) {
		return vNumberString;
	}
	if (vLength >= 7) {
		var vFormattedNumber = vNumberString.substr(vLength-4,4);
		var vFormattedNumber = vNumberString.substr(vLength-7,3) + "-" + vFormattedNumber;
		if (vLength >= 10) {
			var vFormattedNumber = vNumberString.substr(vLength-10,3) + "-" + vFormattedNumber;
			if (vLength > 10) { // all numbers over area code considered international codes and not formatted
				var vFormattedNumber = vNumberString.substr(0,vLength-10) + "-" + vFormattedNumber;
			}
		}
	}
	return vFormattedNumber;
}
		

function capitalizeFirst(vThis) {
	
	var firstLetter = vThis.value.substr(0,1);
	var replaceString = vThis.value.substr(1,vThis.value.length);
	
	replaceString = firstLetter.toUpperCase() + replaceString;
	
	vThis.value = replaceString;
}

function validateName(vText) {
	vText = vText.toLowerCase();
	
	if (vText.length < 3) {
		return 1;
	}

	var i;
	var invalidChars = "\"\\|~!@#$/?><%^&*()_+`0133456789;:][{}";
	for (i=0; i < invalidChars.length; i++){
		if (vText.lastIndexOf(invalidChars.charAt(i)) != -1){	
			return 1;
		}
	}
	
	var obseneWords = getDirtyWords();
	// check for valid area code
	if (obseneWords.lastIndexOf(" " + vText + " ") != -1){
		return 1;
	}

	var requiredChars = "aeiouy";
	for (i=0; i < requiredChars.length; i++){
		if (vText.lastIndexOf(requiredChars.charAt(i)) != -1){	
			return 0;	// return valid if vowel found and all other tests passed
		}
	}
	
	return 1;  // return error is no vowel detected above

}

// V1.1.3: Sandeep V. Tamhankar (stamhankar@hotmail.com)
function validateEmail (emailStr) {
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);
	
	if (matchArray==null) {
		return true;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	
	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
			return true;
	   }
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			return true;
	   }
	}
	
	if (user.match(userPat)==null) {
		return true;
	}
	
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				return true;
	   		}
		}
		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) {
			return true;
	   	}
	}

	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) {
		return true;
	}


	if (len<2) {
		return true;
	}
	return false;
}

function getDirtyWords() {
	var dirtyWords 	 = " anal anus ass asshole butt crap damn fart god hell piss rectal rectum shit spamming spam spamer spammer";
	dirtyWords 		+= " turd balls bang clit cock cum cunt dildo fuck gangbang jism masturbate pecker prick pussy suck tits";
	dirtyWords		+= " twat vibrator woody bastard bastards bitch dike faggot fucker shemale bitch sperm wanker whore duck mouse ";
	return dirtyWords;
}
function validate() {
			var error = "";
			error  = validate_type();
			error += validate_names();
			error += validate_email();
			error += validate_phone_numbers();

			if (error != "") {
				error = "We're sorry, we can't submit your free registration yet.\nPlease double-check the following fields:\n" + error;
				alert(error);
			}
			else {
				
					document.forms.form1.submit();
				
			}

		}

		function validate_phone_numbers() {
			var error = "";  						// initionalize "errors" as empty
			var thisForm = document.forms.form1;	// initionalize form object

			if (StripAlphaNumeric(thisForm.f_home_phone.value).length < 10) {
				error += "\n    Home Phone Number";
			}
			if (StripAlphaNumeric(thisForm.f_other_phone.value).length < 10) {
				error += "\n    Other/Alternate Phone Number";
			}

			// If no errors, consolidate phone numbers
			if (error == "") {
				thisForm.f_home_phone.value = FormatPhoneNumber(thisForm.f_home_phone.value);
				thisForm.f_other_phone.value = FormatPhoneNumber(thisForm.f_other_phone.value);
			}
			return error;
		}

		function validate_names(){
			var error = "";
			var newLine = "";
			var thisForm = document.forms.form1;

			if (validateName(thisForm.FirstName.value)){
				error += "\n    First Name";
			}
			if (validateName(thisForm.LastName.value)){
				error += "\n    Last Lame";
			}
			return error;
		}

		function validate_email() {
			var error = "";
			var thisForm = document.forms.form1;
			if (validateEmail(thisForm.Email.value)){
				error += "\n    Email Address";
			}
			return error;
		}


		function validate_type() {
			var thisForm = document.forms.form1;
			var error = "";
			if (thisForm.Type.value == "") {
				error = "\n    Buying/Selling Option";
			}
			return error;
		}