// JavaScript Document
function SetDisplayByClass(classname, set_to) {
	allNodes = document.getElementsByClassName(classname);
	for(i = 0; i < allNodes.length; i++) {
		allNodes[i].style.display = set_to;
	}
}


function valForm() {

	SetDisplayByClass('feedback', 'none');

	errors = '';
	
	if(!document.getElementById('name').value) {
		errors += '\tPlease enter your name.\n';
		document.getElementById('name-feedback').style.display = "inline";
	}
	
	if(!document.getElementById('email').value) {
		errors += '\tPlease enter your e-mail address.\n';
		document.getElementById('email-feedback-none').style.display = "inline";
	} else {
		p=document.getElementById('email').value.indexOf('@');
		if(p<1 || p==(document.getElementById('email').value.length-1)) {
			errors += '\tPlease enter a valid e-mail address.\n';
			document.getElementById('email-feedback-invalid').style.display = "inline";
		}
	}
	
	
	
	if(errors != '') {
		errors = 'The following errors occurred:\n' + errors;
		//alert(errors);
	}
	
	document.returnValue = (errors == '');
}