Untitled

Display DIV only if user has been Idle for X amount of time
var timer; // create a timer at first
// restart timer on click
function startIdle() {
    timer = setTimeout(function() { /* show div */ }, time);
}
if (document.addEventListener) {
    document.addEventListener('mouseup', startIdle, false);
}
else {
    document.attachEvent('onmouseup', startIdle);
}
// start the first timer
startIdle();

var trigger = 30000
$.(function(){
    setInterval('displayInf()',trigger );

    $('body').bind('click dblclick keypress mousemove scroll', function(){
        clearDisplayInf();
    });
});

function displayInf()
{
    $('body').append('<div>Your notification div</div>');
}

function clearDisplayInf()
{
    trigger = clearInterval(trigger);
    trigger = setInterval('displayInf()', 30000 );
}