function enter() {

		document.getElementById('loginarea_back').style.display="block";
		document.getElementById('loginarea').style.display="block";

}
function exitit() {

		document.getElementById('loginarea_back').style.display="none";
		document.getElementById('loginarea').style.display="none";
}

function error() {
		document.getElementById('error_back').style.display="block";
		document.getElementById('errorarea').style.display="block";
}
function closer() {
		document.getElementById('error_back').style.display="none";
		document.getElementById('errorarea').style.display="none";
}

function greeting() {
countdown('5');
document.getElementById('loginarea_back').style.display="block";
document.getElementById('greetingarea').style.display="block";


}

function greetingsubmit() {
		document.getElementById('loginarea_back').style.display="none";
		document.getElementById('greetingarea').style.display="none";
}

function countdown(sec) {
	if (sec>0) {
	 document.getElementById('timer').innerHTML="<b>"+sec+"</b>";
     sec=sec-1;}
     else {
     greetingsubmit();
     	}
     setTimeout('countdown(' + sec + ');', 1000);
}