//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] = 'contact_name';
reqd_fields[1] = 'suburb';
reqd_fields[2] = 'telephone';
reqd_fields[3] = 'user_email';
reqd_fields[4] = 'job_type';
reqd_fields[5] = 'job_name';


	
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 displayErrors(a,URL) {
	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 = "#";	
                        GoToURL(URL);		
		}
	}
	return flag;
}
//call from onsubmit parameter of form tag like this: return validate(this)
function validate(formObj,URL) {
	req_error = new Array();						error = new Array(
				req_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.";
	}
	return displayErrors(error,URL);
}