// JavaScript Document

function validFormContact(passForm) {
	if  (passForm.UserName.value == "") {
		alert("You must enter your user name.")
		passForm.UserName.focus()
		return false
	}
	if  (passForm.Password.value == "") {
		alert("You must enter your password.")
		passForm.Password.focus()
		return false
	}
	return true
}

function validFormContactUs(passForm) {
	if  (passForm.realname.value == "") {
		alert("You must enter your name.")
		passForm.realname.focus()
		return false
	}
	if  (passForm.email.value == "") {
		alert("You must enter an email address.")
		passForm.email.focus()
		return false
	} else {
		if (!validEmail(passForm.email.value)) {
			alert("This does not appear to be a valid email address.")
			passForm.email.value=""
			passForm.email.focus()
			return false
		}
	}
	if  (passForm.comment.value == "") {
		alert("You must enter a comment.")
		passForm.comment.focus()
		return false
	}
	return true
}

function validEmail(email) {
	invalidChars = " /:,;"
	
	if (email == "") {						// cannot be empty
		return false
	}
	for (i=0; i<invalidChars.length; i++) {	// does it contain any invalid characters?
		badChar = invalidChars.charAt(i)
		if (email.indexOf(badChar,0) > -1) {
			return false
		}
	}
	atPos = email.indexOf("@",1)			// there must be one "@" symbol
	if (atPos == -1) {
		return false
	}
	if (email.indexOf("@",atPos+1) != -1) {	// and only one "@" symbol
		return false
	}
	periodPos = email.indexOf(".",atPos)
	if (periodPos == -1) {					// and at least one "." after the "@"
		return false
	}
	if (periodPos+3 > email.length)	{		// must be at least 2 characters after the "."
		return false
	}
	return true
}