function upmouse(event) {
	var mouton = document.getElementById("mouton");
	mouton.style.display="";
	mouton.style.left = event.clientX+document.body.scrollLeft+8;
	mouton.style.top = event.clientY+document.body.scrollTop+8;
}

function outmouse() {
	var mouton = document.getElementById("mouton");
	mouton.style.display="none";
}