function afficherSon() {
	var myWin = window.open("","musique_ref","menubar=no, status=no, scrollbars=no, menubar=no, width=330, height=50, top="+(screen.availHeight-200)+",left="+(screen.availWidth-400));
	
	if(myWin.location.href.indexOf("musique.php") != -1) {
		myWin.focus();
	} else {
		myWin = window.open("musique.php","musique_ref","menubar=no, status=no, scrollbars=no, menubar=no, width=330, height=50, top="+(screen.availHeight-200)+",left="+(screen.availWidth-400));
	};
};

function demarrerSon() {
	var myWin = window.open("","musique_ref","menubar=no, status=no, scrollbars=no, menubar=no, width=330, height=50, top="+(screen.availHeight-200)+",left="+(screen.availWidth-400));
	
	if(myWin.location.href.indexOf("musique.php") == -1) {
		myWin = window.open("musique.php","musique_ref","menubar=no, status=no, scrollbars=no, menubar=no, width=330, height=50, top="+(screen.availHeight-200)+",left="+(screen.availWidth-400));
	};
}

function arreterSon() {
	var myWin = window.open("","musique_ref","menubar=no, status=no, scrollbars=no, menubar=no, width=330, height=50, top="+(screen.availHeight-200)+",left="+(screen.availWidth-400));
	myWin.close();
}