function cher(showDiv, hideDiv1, hideDiv2) {
	document.getElementById(showDiv).className = "see";
	document.getElementById(showDiv+'m').className = "see";
	document.getElementById(hideDiv1).className = "non";
	document.getElementById(hideDiv1+'m').className = "non";
	document.getElementById(hideDiv2).className = "non";
	document.getElementById(hideDiv2+'m').className = "non";
}