// JavaScript Document
var showed = null;
function showDiv(showvar,no){
	if(showed != null){
			for(i=1;i<=showedno;i++){
				document.getElementById(showed+i).style.display='none';
			}
	}
	for(i=1;i<=no;i++){
	document.getElementById(showvar+i).style.display='block';
	}
	showed = showvar;
	showedno = no;
}