// JavaScript Document

<script type="text/javascript">

//script generated by javascriptformvalidator.com

//use errorMode=0 for alert
//use errorMode=1 to write errors to an element
errorMode = 0;

//elementId to write the errors to (if applicable)
errorElementId = '';

//custom js arrays
var reqd_fields = new Array();
reqd_fields[0] = 'yrfname';
reqd_fields[1] = 'yrlname';
reqd_fields[2] = 'yrphone';
reqd_fields[3] = 'yremail';
reqd_fields[4] = 'contactme';
reqd_fields[5] = 'yrtopic';
reqd_fields[6] = '';
reqd_fields[7] = 'txtmessage';
var email_fields = new Array();
email_fields[0] = 'yremail';
	
function dropdownSelected(selectObj) {
	return (selectObj.selectedIndex == 0 || selectObj.value == '')?false:true;
}
function checkboxChecked(checkboxObj) {
	return checkboxObj.checked;
}
function inputFilled(formElem) {
	return (formElem.value == '')?false:true;
}
function isProvided(formElem) {
	switch (formElem.type) {
		case 'select-one':
			return dropdownSelected(formElem);
			break;
		case 'checkbox':
			return checkboxChecked(formElem);
			break;
		default:
			return inputFilled(formElem);
			break;
	}
}
function isEmail(formElem) {
	emailStr = formElem.value;
	atPos = emailStr.indexOf('@');
	dotPos = emailStr.lastIndexOf('.');
	return (atPos > 0 && dotPos > atPos && dotPos < emailStr.length-2);
}
function displayErrors(a) {
	flag = true;
	spacer = (errorMode==0)?"\n":"<br />";
	errStr = "";
	for (var i=0; i < a.length; i++) {
		if (a[i].length > 0) {
			flag = false;
			for (var v=0; v < a[i].length; v++) {
				errStr += a[i][v] + spacer;					
			}		
		}
	}
	if (errStr != "") {
		if (errorMode == 0)
			alert(errStr);
		else {
			document.getElementById(errorElementId).innerHTML = errStr;
			location.href = "#";			
		}
	}
	return flag;
}
//call from onsubmit parameter of form tag like this: return validate(this)
function validate(formObj) {
	req_error = new Array();				email_error = new Array();		error = new Array(
				req_error								,email_error				);
	
	for (var i=0; i < reqd_fields.length; i++) {
		formElem = formObj.elements[reqd_fields[i]];
		if (!isProvided(formElem))
			req_error[req_error.length] = formElem.name + " is a required field.";
	}
	for (var i=0; i < email_fields.length; i++) {
		formElem = formObj.elements[email_fields[i]];
		if (!isEmail(formElem))
			email_error[email_error.length] = "\'" + formElem.value + "\' is not a valid email address.";
	}
	return displayErrors(error);
}
</script>