function i_frame(){
	var get_url = document.URL;
	var id_num = new Array();
	id_num = get_url.split("#");

	if(id_num[1] != undefined ){
		var id_num_url = "world/"+id_num[1]+".html";
		if(document.getElementById){
			document.getElementById("iframe").src=id_num_url;
		}else{
			document.all.item("iframe").style.src=id_num_url;
		}
	}
}