function validForm() {
	var name = document.getElementById('username').value;
	var mail = document.getElementById('email').value;
	var status = false;
		
	
	if  (name == '') {
		document.getElementById('username').style.background = '#ffcccc';
	} else {
		document.getElementById('username').style.background = '#fff';
	}
	if  (!mail.match(/[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/))
	{
		document.getElementById('email').style.background = '#ffcccc';
	} else {
		document.getElementById('email').style.background = '#fff';
	}

	if ( (name != '') && (mail.match(/[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/)) ) status = true;
		
	if (status) {
		document.feedback.submit();		
	}
}


function viewWork(id) {
	document.getElementById('tab'+id).style.background = '#d9ecf3';
}