var DOM = (document.getElementById)? true : false;
var OP = (window.opera)? true : false;
var OP5 = (OP && DOM)? true : false;
var NS = (window.outerWidth && !OP)? true : false;
var NS6 = (NS && DOM)? true : false;
var NS4 = (NS && !DOM)? true : false;
var IE = (document.all && !OP)? true : false;
var IE5 = (IE && DOM)? true : false;
var IE4 = (IE && !DOM)? true : false;

function GetObjectByID(strID){
	var Obj;
	if(NS4){
		Obj = document.layers[strID];
	}else if (IE4){
		Obj = document.all[strID];
	}else if (DOM){
		Obj = document.getElementById(strID);
	}
	return Obj;
}

function checkBCIDform(myForm)
{
	if(myForm.prefix.value==""){
		alert("BCIDを入力して下さい。");
		myForm.prefix.focus();
		return false;
	}
	if(myForm.bcid.value==""){
		alert("BCIDを入力して下さい。");
		myForm.bcid.focus();
		return false;
	}
	return true
}

wImg1=new Image();wImg1.src="./gallery/tengel-1.jpg";wImg1.width=145
wImg2=new Image();wImg2.src="./gallery/shichoshitu_3.jpg";wImg2.width=145
wImg3=new Image();wImg3.src="./gallery/hanna2.jpg";wImg3.width=145
wImg4=new Image();wImg4.src="./gallery/ritsumeikan02.jpg";wImg4.width=145
wImg5=new Image();wImg5.src="./gallery/gc-3.jpg";wImg5.width=145
wImg6=new Image();wImg6.src="./gallery/harmony2.jpg";wImg6.width=145

wImg11=new Image();wImg11.src="./images/ＢＣブックカバー023.jpg";wImg11.width=145
wImg12=new Image();wImg12.src="./images/ＢＣブックカバー025.jpg";wImg12.width=145
wImg13=new Image();wImg13.src="./images/o0800060010622797055.jpg";wImg13.width=145
wImg14=new Image();wImg14.src="./images/o0800106710622814159.jpg";wImg14.width=145
wImg15=new Image();wImg15.src="./images/P1010472.JPG";wImg15.width=145
wImg16=new Image();wImg16.src="./images/P1010473.JPG";wImg16.width=145
wImg17=new Image();wImg17.src="./images/カバー４.jpg";wImg17.width=145
wImg18=new Image();wImg18.src="./images/カバー５.jpg";wImg18.width=145

function gallery(){
	clearTimeout(timerID);
	if(document.gr1.src==wImg11.src){
		document.gr1.src=wImg12.src
		document.gr2.src=wImg13.src
		document.gr3.src=wImg14.src
	}else if(document.gr1.src==wImg12.src){
		document.gr1.src=wImg13.src
		document.gr2.src=wImg14.src
		document.gr3.src=wImg15.src
	}else if(document.gr1.src==wImg13.src){
		document.gr1.src=wImg14.src
		document.gr2.src=wImg15.src
		document.gr3.src=wImg16.src
	}else if(document.gr1.src==wImg14.src){
		document.gr1.src=wImg15.src
		document.gr2.src=wImg16.src
		document.gr3.src=wImg17.src
	}else if(document.gr1.src==wImg15.src){
		document.gr1.src=wImg16.src
		document.gr2.src=wImg17.src
		document.gr3.src=wImg18.src
	}else if(document.gr1.src==wImg16.src){
		document.gr1.src=wImg17.src
		document.gr2.src=wImg18.src
		document.gr3.src=wImg1.src
	}else if(document.gr1.src==wImg17.src){
		document.gr1.src=wImg18.src
		document.gr2.src=wImg1.src
		document.gr3.src=wImg2.src
	}else if(document.gr1.src==wImg18.src){
		document.gr1.src=wImg1.src
		document.gr2.src=wImg2.src
		document.gr3.src=wImg3.src
	}else if(document.gr1.src==wImg1.src){
		document.gr1.src=wImg2.src;
		document.gr2.src=wImg3.src;
		document.gr3.src=wImg4.src;
	}else if(document.gr1.src==wImg2.src){
		document.gr1.src=wImg3.src;
		document.gr2.src=wImg4.src;
		document.gr3.src=wImg5.src;
	}else if(document.gr1.src==wImg3.src){
		document.gr1.src=wImg4.src;
		document.gr2.src=wImg5.src;
		document.gr3.src=wImg6.src;
	}else if(document.gr1.src==wImg4.src){
		document.gr1.src=wImg5.src;
		document.gr2.src=wImg6.src;
		document.gr3.src=wImg11.src;
	}else if(document.gr1.src==wImg5.src){
		document.gr1.src=wImg6.src
		document.gr2.src=wImg11.src
		document.gr3.src=wImg12.src
	}else{
		document.gr1.src=wImg11.src
		document.gr2.src=wImg12.src
		document.gr3.src=wImg13.src
	}
	timerID=setTimeout("gallery()",4000);
}

function gallery_bk(){
	clearTimeout(timerID);
	if(document.gr1.src==wImg1.src){
		document.gr1.src=wImg2.src;
		document.gr2.src=wImg3.src;
		document.gr3.src=wImg4.src;
	}else if(document.gr1.src==wImg2.src){
		document.gr1.src=wImg3.src;
		document.gr2.src=wImg4.src;
		document.gr3.src=wImg5.src;
	}else if(document.gr1.src==wImg3.src){
		document.gr1.src=wImg4.src;
		document.gr2.src=wImg5.src;
		document.gr3.src=wImg6.src;
	}else if(document.gr1.src==wImg4.src){
		document.gr1.src=wImg5.src;
		document.gr2.src=wImg6.src;
		document.gr3.src=wImg1.src;
	}else if(document.gr1.src==wImg5.src){
		document.gr1.src=wImg6.src
		document.gr2.src=wImg1.src
		document.gr3.src=wImg2.src
	}else{
		document.gr1.src=wImg1.src
		document.gr2.src=wImg2.src
		document.gr3.src=wImg3.src
	}
	timerID=setTimeout("gallery()",4000);
}