window.onload = function(){
flag=1;
$("div#Visual1").fadeIn("slow");
setInterval("swapPhoto()", 6500);
//$("div#visual").fadeIn("slow");
}
// 画像を交互に入れ替えるための関数
function swapPhoto(){

	if(flag==1){
		document.getElementById('Visual4').style.display = "none";
		document.getElementById('Visual1').style.display = "none";
		$("div#Visual2").fadeIn("slow");
		flag=2;
      }else if(flag==2){
		document.getElementById('Visual1').style.display = "none";
		document.getElementById('Visual2').style.display = "none";
		$("div#Visual3").fadeIn("slow");
		flag=3;
      }else if(flag==3){
		document.getElementById('Visual2').style.display = "none";
		document.getElementById('Visual3').style.display = "none";
		$("div#Visual4").fadeIn("slow");
		flag=4;
      }else if(flag==4){
		document.getElementById('Visual3').style.display = "none";
		document.getElementById('Visual4').style.display = "none";
		$("div#Visual5").fadeIn("slow");
		flag=5;
      }else{
		document.getElementById('Visual5').style.display = "none";
		document.getElementById('Visual1').style.display = "none";
		$("div#Visual1").fadeIn("slow");
		flag=1;
      }
	  return flag;
}