//--- textLimit ---------------------------------------
// limits the length of text entered into a form textarea field

function textLimit(field, maxlen) {
	if (field.value.length > maxlen + 1)
		alert ('You\'re limited to '+maxlen+' characters maximum!\nYour input has been truncated!');
	if (field.value.length > maxlen)
		field.value = field.value.substring(0, maxlen);
}

//--- numbersonly ---------------------------------------
// copyright 1999 Idocs, Inc. http://www.idocs.com
// Distribute this script freely but keep this notice in place
function numbersonly(myfield, e, dec) {
var key;
var keychar;

if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;

keychar = String.fromCharCode(key);

// control keys and punctuation
if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) || (key==45) || (key==46) || (key==120) || (key==45) || (key==40) || (key==41) || (key==32) || (key==43))
   return true;

// numbers
else if ((("0123456789").indexOf(keychar) > -1))
   return true;

// decimal point jump
else if (dec && (keychar == ".")) {
   myfield.form.elements[dec].focus();
   return false;
}
else return false;
}

//--- validEmail ---------------------------------------

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;
}