function changeclass(picnumber) {
	//turn all others off
	document.getElementById('pic1').className = "rollover";
	document.getElementById('pic2').className = "rollover";
	document.getElementById('pic3').className = "rollover";
	document.getElementById('pic4').className = "rollover";
	document.getElementById('pic5').className = "rollover";
	document.getElementById('pic6').className = "rollover";
	document.getElementById('pic7').className = "rollover";
	document.getElementById('pic8').className = "rollover";
	document.getElementById('pic9').className = "rollover";
	//document.getElementById('pic10').className = "rollover";
	
	//turn selected on
	document.getElementById(picnumber).className = "rolloveron";
}