function changeOver(cat){
	var cathdr = document.getElementById(cat);
	document.getElementById('change').style.display = "none";
	document.getElementById('change1').style.display = "none";
	document.getElementById('change2').style.display = "none";
	document.getElementById('change3').style.display = "none";
	document.getElementById('change4').style.display = "none";
	document.getElementById('change5').style.display = "none";
	document.getElementById('change6').style.display = "none";
	document.getElementById('change7').style.display = "none";
	document.getElementById('change8').style.display = "none";
	cathdr.style.display = "block";
}
function changeOut(){
	document.getElementById('change').style.display = "block";
	document.getElementById('change1').style.display = "none";
	document.getElementById('change2').style.display = "none";
	document.getElementById('change3').style.display = "none";
	document.getElementById('change4').style.display = "none";
	document.getElementById('change5').style.display = "none";
	document.getElementById('change6').style.display = "none";
	document.getElementById('change7').style.display = "none";
	document.getElementById('change8').style.display = "none";
}