function chanp(id){
	
	document.getElementById('Image' + id).src = "image/c"+id+".jpg";
	if(id>=8||id==3||id==4)
	document.getElementById('menu' + id).style.visibility= '';
	
}
function rchanp(id){
	
	document.getElementById('Image' + id).src = "image/"+id+".jpg";
	if(id>=8||id==3||id==4)
	document.getElementById('menu' + id).style.visibility= 'hidden';
	
}