// JavaScript Document copyright Lashgraphics Pty Ltd 2007 - www.lashgraphics.com.au
window.onload = initForms;

function initForms() {
	for (var i=0; i< document.forms.length; i++) {
		document.forms[i].onsubmit = function() {return validForm();}
	}
}

function validForm() {
	var allGood = true;
	var allTags = document.getElementsByTagName("*");

	for (var i=0; i<allTags.length; i++) {
		if (!validTag(allTags[i])) {
			allGood = false;
		}
	}
	return allGood;

	function validTag(thisTag) {
		var outClass = "";
		var allClasses = thisTag.className.split(" ");
	
		for (var j=0; j<allClasses.length; j++) {
			outClass += validBasedOnClass(allClasses[j]) + " ";
		}
	
		thisTag.className = outClass;
	
		if (outClass.indexOf("invalid") > -1) {
			invalidLabel(thisTag.parentNode);
			thisTag.focus();
			if (thisTag.nodeName == "INPUT") {
				thisTag.select();
			}
			return false;
		}
		return true;
		
		function validBasedOnClass(thisClass) {
			var classBack = "";
		
			switch(thisClass) {
				case "":
				case "invalid":
					break;
				case "email":
					if (allGood && !validEmail(thisTag.value)) classBack = "invalid ";
					classBack += thisClass;
					break;
				case "whatisthis":
					if (allGood && thisTag.value!="") classBack = "invalid ";
					classBack += thisClass;
					break;
				case "reqd":
					if (allGood && thisTag.value=="") classBack = "invalid ";
					classBack += thisClass;
					break;
				case "tmessage":
					if (allGood && isitSpam(thisTag.value)) classBack = "invalid ";
					classBack += thisClass;
					break;
				default:
					classBack += thisClass;
			}
			return classBack;
		}
				
		function validEmail(email) {
			var invalidChars = " /:,;";
		
			if (email == "") {
				return false;
			}
			
			var re = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

			return re.test(email);
		}
		
	
		function isitSpam(tmessage) {
			if (tmessage == "") {
				return false;
			}
			var re=/^(www|http)$/gi;

			return re.test(tmessage);
		}
		
		function invalidLabel(parentTag) {
			if (parentTag.nodeName == "LABEL") {
				parentTag.className += " invalid";
			}
		}
	}
}

function isitSpam(field) {
	re=/(www|http)/gi;
	if (re.test(field.value)){
	window.alert("Sorry the content of this message is invalid");
	field.value="";
	field.focus();
	}
}