function check(form){
	if(form.name.value == ""){
		alert("What is your name?");
		form.name.focus();
		return false;
	}
	if(form.phone.value == ""){
		alert("What is your phone?");
		form.phone.focus();
		return false;
	}
	if(form.comments.value == ""){
		alert("What is your comment?");
		form.comments.focus();
		return false;
	}
	if(!validEmail(form.email.value)){
		alert("Please enter a valid Email address.");
		form.email.focus();
		return false;
	}
}
function validEmail(email){
	var invalidChars = " /:,;"
	if(email == ""){
		return false
	}
	for (var i = 0; i<invalidChars.length; i++){
		var badChar = invalidChars.charAt(i)
		if(email.indexOf(badChar,0) != -1){
			return false
		}
	}
	var atPos = email.indexOf("@",1)
	if(atPos == -1){
		return false
	}
	if(email.indexOf("@",atPos+1) != -1){
		return false
	}
	var periodPos = email.indexOf(".",atPos)
	if(periodPos == -1){
		return false
	}
	if(periodPos+3 > email.length){
		return false
	}
	return true
}