/** Function to validate that a string is an email address. Returns true if the email address is valid, false otherwise. */
function echeck(str) {
	var at="@"
	var dot="."
	var errorMessage = "The email address '" + str + "' is not in a valid format. Please update and try again."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		alert(errorMessage)
		return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		alert(errorMessage)
		return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert(errorMessage)
		return false
	}

	if (str.indexOf(at,(lat+1))!=-1){
		alert(errorMessage)
		return false
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert(errorMessage)
		return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
		alert(errorMessage)
		return false
	}

	if (str.indexOf(" ")!=-1){
		alert(errorMessage)
		return false
	}

	return true			
}

/* Function that validates the contents of the contact form. */
function validateContact(myForm) {
	var address=myForm.form_email
	
	if ((address.value==null)||(address.value=="")){
		alert("Please enter an email address and try again.")
		address.focus()
		return false
	}
	if (echeck(address.value)==false){
		address.value=""
		address.focus();
		return false
	}
	return true
}