GoodColor = "#00FF00";
BadColor  = "#FF0000";
GoodGif = "Good.gif";
BadGif = "Bad.gif";

function SetHighlight(objname,isOK) {
	if (isOK) {
		document.getElementById("lbl"+objname).style.color = GoodColor;
		//document.images["img"+objname].src = GoodGif;
	} else {
		document.getElementById("lbl"+objname).style.color = BadColor;
		//document.images["img"+objname].src = BadGif;
	}
}

function CheckText(objname) {
	if (document.getElementById(objname).value == "") {
		SetHighlight(objname,false);
		return false;
	} else {
		SetHighlight(objname,true);
		return true;
	}
}

function CheckRadio(objname) {
//	var radioSet = document.getElementById(objname)
	var radioSet = document.theForm[objname] // Not happy with this but ....
	var isSet = false
	for (var i = 0; i < radioSet.length; i++) {
		isSet = isSet || radioSet[i].checked
	}
	if (!isSet) {
		SetHighlight(objname,false);
		return false;
	} else {
		SetHighlight(objname,true);
		return true;
	}
}

function CheckCheckbox(objname) {
	if (document.getElementById(objname).checked == false) {
		SetHighlight(objname,false);
		return false;
	} else {
		SetHighlight(objname,true);
		return true;
	}
}

function CheckMenu(objname) {
	if (document.getElementById(objname).selectedIndex == 0) {
		SetHighlight(objname,false);
		return false;
	} else {
		SetHighlight(objname,true);
		return true;
	}
}

function CheckNumber(objname, blankOK) {
	if (document.getElementById(objname).value == "" && !blankOK) {
		SetHighlight(objname,false);
	} else {
		if (isNaN(document.getElementById(objname).value)) {
			SetHighlight(objname,false);
			return false;
		} else {
			SetHighlight(objname,true);
			return true;
		}
	}
}

function CheckDate(objname, blankOK) {
	var theDateString = document.getElementById(objname).value;
	if ( theDateString == "" && blankOK) {
		SetHighlight(objname,true);
		return true;
	} else {
		if (!DateValid(document.getElementById(objname).value)) {
			SetHighlight(objname,false);
			return false;
		} else {
			SetHighlight(objname,true);
			return true;
		}
	}
}

function DateValid(theDateString) {
	var arrDate = theDateString.split('/');
	var theDay = new Number(arrDate[0]);
	var theMonth = new Number(arrDate[1]);
	var theYear = new Number(arrDate[2]);
	
	var aDate = new Date(theYear,theMonth-1,theDay); 
	if (isNaN(aDate)) { return false }

	var DayOK = theDay == aDate.getDate();
	var MonthOK = theMonth == (aDate.getMonth()+1);
	if ((theYear > 1900) && (theYear < 2000)) { theYear = theYear - 1900 }
	var YearOK = theYear == aDate.getYear();
	
	if (!DayOK || !MonthOK || !YearOK) { return false }
	return true;
}


function CheckEmail(objname, blankOK) {
	if (document.getElementById(objname).value == "" && !blankOK) {
		SetHighlight(objname,false);
		return false;
	} else {
		if (!EmailValid(document.getElementById(objname).value)) {
			SetHighlight(objname,false);
			return false;
		} else {
			SetHighlight(objname,true);
			return true;
		}
	}
}

function EmailValid(emailStr) {
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);

	if (matchArray==null) {
		alert("Email address seems incorrect (check @ and .'s)");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
		alert("The username contains invalid characters.");
		return false;
		}
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
		alert("Ths domain name contains invalid characters.");
		return false;
		}
	}
	if (user.match(userPat)==null) {
		alert("The username doesn't seem to be valid.");
		return false;
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				alert("Destination IP address is invalid!");
				return false;
				}
		}
		return true;
	}
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
		if (domArr[i].search(atomPat)==-1) {
			alert("The domain name does not seem to be valid.");
			return false;
		}
	}
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
		alert("The address must end in a well-known domain or two letter " + "country.");
		return false;
	}
	if (len<2) {
		alert("This address is missing a hostname!");
		return false;
	}
	return true;
}

function CheckCreditCard(objname) {

        var cardnumber = document.getElementById(objname).value;

        var re = /[^0-9]/g;
        cardnumber = cardnumber.replace(re, '');
		if (cardnumber.length == 0) { SetHighlight(objname,false); return false; }
		if (cardnumber.length > 16) { SetHighlight(objname,true); return true; }

        var total = 0;
        var d = 0;
        while (cardnumber.length != 0) {
                
                total += parseInt(cardnumber.substring(cardnumber.length - 1, cardnumber.length));  
                cardnumber = cardnumber.substr(0, cardnumber.length - 1);
                d = parseInt(cardnumber.substring(cardnumber.length - 1, cardnumber.length));  
                cardnumber = cardnumber.substr(0, cardnumber.length - 1);
                d = isNaN(d) ? 0 : d;
                if (d < 9)
                        total += ((d * 2) % 9);
                else 
                        total += 9; 
        }
        if (total % 10 == 0) {
				SetHighlight(objname,true);
                return true;
        } else {
				SetHighlight(objname,false);
                return false;
        }
}


function TextAreaLimiter(objname, limit) {
	var theTA = document.getElementById(objname)
	if (theTA.value.length > limit)
		theTA.value = theTA.value.substring(0, limit);
}