var W3CDOM = (document.getElementsByTagName && document.createElement);

window.onload = function (){
	// Set all external links to open in a new window
	var x = document.getElementsByTagName('a');
	for (var a=0;a<x.length;a++) {
		if (x[a].className.indexOf('linkExternal') > -1) {
			if (x[a].className.indexOf('noIcon') == -1){
				x[a].innerHTML = x[a].innerHTML + '&nbsp;<img src="/assets/icons/offsite.gif" alt="Opens in a new window" />';
			}
			x[a].onclick = function () {
				return externalWindow(this.href);
			}
		}
		if (x[a].className.indexOf('linkFile') > -1) {
			if (x[a].className.indexOf('noIcon') == -1){
				x[a].innerHTML = '<img src="/assets/trans.gif" alt="Opens in a new window" class="fileIcon" />&nbsp;' + x[a].innerHTML;
			}
			x[a].onclick = function () {
				return externalWindow(this.href);
			}
		}
	}
	// Set all forms to validate when they are submitted
	for (var f=0;f<document.forms.length;f++){
		frmID = document.forms[f].id
		document.getElementById(frmID).onsubmit = function (){
			return validate(this);
		}
	}
}

function validate(frm) {
	validForm = true;
	firstError = null;
	errorstring = '';
	var x = frm.elements;
	for (var e=0;e<x.length;e++){
		if (x[e].className.indexOf('fieldRequired') > -1 && !x[e].value){
			writeError(x[e],'This field is required');
		}
		if (x[e].className.indexOf('fieldEmail') > -1 && x[e].value.indexOf('@') == -1){
			writeError(x[e],'This is not a valid email address');
		}
	}
	if (!W3CDOM){
		alert(errorstring);
	}
	if (firstError){
		firstError.focus();
	}
	return validForm;
}

function writeError(obj,message) {
	validForm = false;
	if (obj.hasError){
		return;
	}
	if (W3CDOM){
		obj.className += ' error';
		obj.onchange = removeError;
		var sp = document.createElement('span');
		sp.className = 'error';
		sp.appendChild(document.createTextNode(message));
		obj.parentNode.appendChild(sp);
		obj.hasError = sp;
	}else{
		errorstring += obj.name + ': ' + message + '\n';
		obj.hasError = true;
	}
	if (!firstError){
		firstError = obj;
	}
}

function removeError(){
	this.className = this.className.substring(0,this.className.lastIndexOf(' '));
	this.parentNode.removeChild(this.hasError);
	this.hasError = null;
	this.onchange = null;
}

function externalWindow(href){
	window.open(href);
	return false;
}