//枚数設定(thickbox.jsも修正してください）
var pptcnt=23;

function next2(){
	if(phtno+12<pptcnt){
	phtno=phtno+6;
	next();
	}
	else{
		phtno=pptcnt-7;
		next();
	}
	}

function prev2(){
	if(phtno-6>0){
	phtno=phtno-6;
	prev();
	}
	else{
		phtno=2;
		prev();
		}
	}


function next(){

if(phtno6<pptcnt-1){
	phtno=phtno+1;
	phtno2=phtno+1;
	phtno3=phtno2+1;
	phtno4=phtno3+1;
	phtno5=phtno4+1;
	phtno6=phtno5+1;
	phtno7=phtno6+1;

	var Obj01 = document.getElementById("A1");
	Obj01.innerHTML="<a href=javascript:tb_show('Photo"+phtno+"','simg/"+phtno+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno+".jpg /></a>";
	
	var Obj02 = document.getElementById("A2");
	Obj02.innerHTML="<a href=javascript:tb_show('Photo"+phtno2+"','simg/"+phtno2+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno2+".jpg /></a>";
	
	var Obj03 = document.getElementById("A3");
	Obj03.innerHTML="<a href=javascript:tb_show('Photo"+phtno3+"','simg/"+phtno3+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno3+".jpg /></a>";
	
	var Obj04 = document.getElementById("A4");
	Obj04.innerHTML="<a href=javascript:tb_show('Photo"+phtno4+"','simg/"+phtno4+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno4+".jpg /></a>";
	
	var Obj05 = document.getElementById("A5");
	Obj05.innerHTML="<a href=javascript:tb_show('Photo"+phtno5+"','simg/"+phtno5+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno5+".jpg /></a>";
	
	var Obj06 = document.getElementById("A6");
	Obj06.innerHTML="<a href=javascript:tb_show('Photo"+phtno6+"','simg/"+phtno6+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno6+".jpg /></a>";
	
	var Obj07 = document.getElementById("A7");
	Obj07.innerHTML="<a href=javascript:tb_show('Photo"+phtno7+"','simg/"+phtno7+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno7+".jpg /></a>";
	var Obj08 = document.getElementById("cnt1");
	Obj08.innerHTML=phtno+" -";
	
	var Obj09 = document.getElementById("cnt2");
	Obj09.innerHTML=phtno7;
}
}

function prev(){
if(phtno>1){
	phtno=phtno-1;
	phtno2=phtno+1;
	phtno3=phtno2+1;
	phtno4=phtno3+1;
	phtno5=phtno4+1;
	phtno6=phtno5+1;
	phtno7=phtno6+1;
	
	var Obj01 = document.getElementById("A1");
	Obj01.innerHTML="<a href=javascript:tb_show('Photo"+phtno+"','simg/"+phtno+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno+".jpg /></a>";
	
	var Obj02 = document.getElementById("A2");
	Obj02.innerHTML="<a href=javascript:tb_show('Photo"+phtno2+"','simg/"+phtno2+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno2+".jpg /></a>";
	
	var Obj03 = document.getElementById("A3");
	Obj03.innerHTML="<a href=javascript:tb_show('Photo"+phtno3+"','simg/"+phtno3+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno3+".jpg /></a>";
	
	var Obj04 = document.getElementById("A4");
	Obj04.innerHTML="<a href=javascript:tb_show('Photo"+phtno4+"','simg/"+phtno4+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno4+".jpg /></a>";
	
	var Obj05 = document.getElementById("A5");
	Obj05.innerHTML="<a href=javascript:tb_show('Photo"+phtno5+"','simg/"+phtno5+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno5+".jpg /></a>";
	
	var Obj06 = document.getElementById("A6");
	Obj06.innerHTML="<a href=javascript:tb_show('Photo"+phtno6+"','simg/"+phtno6+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno6+".jpg /></a>";
	
	var Obj07 = document.getElementById("A7");
	Obj07.innerHTML="<a href=javascript:tb_show('Photo"+phtno7+"','simg/"+phtno7+".jpg','PhotoGallery')><img alt=Photo src=simg/s"+phtno7+".jpg /></a>";
	
	var Obj08 = document.getElementById("cnt1");
	Obj08.innerHTML=phtno+" -";
	
	var Obj09 = document.getElementById("cnt2");
	Obj09.innerHTML=phtno7;
}
}