function showMail(){
	document.getElementById('sendmail').style.visibility = 'visible';
	document.getElementById('hidemail').style.visibility = 'visible'; 
	document.getElementById('mail').style.visibility = 'hidden'; 
	document.getElementById('contents').style.opacity = "0.4";
	document.getElementById('contents').style.filter = "alpha(opacity=40)";
}

function hideMail(){
	document.getElementById('sendmail').style.visibility = 'hidden';
	document.getElementById('hidemail').style.visibility = 'hidden'; 
	document.getElementById('mail').style.visibility = 'visible'; 
	document.getElementById('contents').style.opacity = "1";
	document.getElementById('contents').style.filter = "alpha(opacity=100)";
}
function openWindow(who){
	myWindow = window.open (quem, "myWindow","status=1,scrollbars=1, width=700,height=400");
}