var original;

function ChangeLogo(page){
	var image;
	if(! window.parent.body.document.getElementById("toplogo")){
		return -1;
	}
	switch(page){
	case 0:
		window.parent.body.document.getElementById("toplogo").innerHTML = original;
		break;
	case 1:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/info.jpg border=0>";
		break;	
	case 2:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/stage.jpg border=0>";
		break;
	case 3:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/internet.jpg border=0>";
		break;
	case 4:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/koubou.jpg border=0>";
		break;
	case 5:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/pia.jpg border=0>";
		break;
	case 6:
		window.parent.body.document.getElementById("toplogo").innerHTML = "<img src=./toplogo/link.jpg border=0>";
		break;
	default:
		window.parent.body.document.getElementById("toplogo").innerHTML = original;
		break;
	}
	
	return 0;
}

function getOriginal(){
	original = window.parent.body.document.getElementById("toplogo").innerHTML;
}