function changeimg(src1, src2, title){
	document.getElementById('bigimage').innerHTML = '<a href="'+src2+'" rel="lightbox"><img src="'+src1+'" title="'+title+'" alt="'+title+'" width="515" height="400" /></a>';
}

function check(){
	if (document.getElementById('name').value == ''){
		alert("Please input Name");
		document.getElementById('name').focus();
		return false;
	}
	if (document.getElementById('email').value == ''){
		alert("Please input Email");
		document.getElementById('email').focus();
		return false;
	}
	if (document.getElementById('message').value == ''){
		alert("Please input Message");
		document.getElementById('message').focus();
		return false;
	}
	return true;
}