var timerID = null; 
var timerOn = false; 
var timecount = 500; 

function montre(id) {
	stopTime();
	var d = document.getElementById(id);
	for (var i = 0; i<=10; i++) {
		if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}
	}
	if (d) {d.style.display='block';}
	
}
function startTime() {  
	if (timerOn == false) {  
		timerID=setTimeout( "montre()" , timecount); 
		timerOn = true; 
	} 
} 

function stopTime() { 
	if (timerOn) {  
		clearTimeout(timerID);  
		timerID = null;  
		timerOn = false;
	} 
}