//--------------------------------------------------------------
// emailus.js
// used by emailus.php
//--------------------------------------------------------------
	function isNum(passedValue) {
			if (passedValue=="") {
				return false
			}
			
			for (i=0; i<passedValue.length; i++) {
				if (passedValue.charAt(i) < "0") {
					return false
				}
				if (passedValue.charAt(i) > "9") {
					return false
				}
			}
			return true
	}
	
	function validEmail(email) {
		invalidChars = " /:,;"

		if (email == "") {
			return false
		}
		
		for (i=0; i<invalidChars.length; i++) {
			badChar = invalidChars.charAt(i)
			if (email.indexOf(badChar,0) > -1) {
				return false
			}
		}
	
		atPos = email.indexOf("@",1)
		
		if (atPos == -1) {
			return false
		}
		
		if (email.indexOf("@",atPos+1) > -1) {
			return false
		}
		
		periodPos = email.indexOf(".",atPos)
		
		if (periodPos == -1) {
			return false
		}
		
		if (periodPos+3 > email.length)	{
			return false
		}
		return true
	}
	
function validateForm(myForm)
{
	if (!validEmail(myForm.email_address.value))
	{
		alert("You must enter a valid email address.")
		myForm.email_address.focus()
		return false
	}
	
	if (myForm.email_address.value == "") {
		alert("You must enter an email address.")
		myForm.email_address.focus()
		return false
	}
	
	if (myForm.email_lastname.value == "") {
		alert("You must enter a last name.")
		myForm.email_lastname.focus()
		return false
	}

	if (myForm.email_firstname.value == "") {
		alert("You must enter a first name.")
		myForm.email_firstname.focus()
		return false
	}
	
	if (myForm.email_message.value == "") {
		alert("You must enter a message.")
		myForm.email_message.focus()
		return false
	}
	return true;
}