function text_inner(e){
	var str1,str2;
	if(document.all || document.getElementById){ //IE‚ÆNN6—p
		if(document.all){
			if(!document.all["empty"].innerHTML){
				document.all["empty"].innerHTML = document.all["main"].innerHTML;
			}
			document.all["main"].innerHTML = document.all[e].innerHTML;
		}else{
			
			if(!document.getElementById("empty").innerHTML){
				str1 = document.getElementById("main").innerHTML;
				document.getElementById("empty").innerHTML = str1;
			}
			str2 = document.getElementById(e).innerHTML;
			document.getElementById("main").innerHTML = str2;
		}
	}
}